Feature/add dotnet plugin (#8503)

* Added dotnet CLI aliases and completions

* Modified README

plugins/dotnet/README.md

+# .NET Core CLI plugin
+
+This plugin provides completion and useful aliases for [.NET Core CLI](https://dotnet.microsoft.com/).
+
+To use it, add `dotnet` to the plugins array in your zshrc file.
+
+```
+plugins=(... dotnet)
+```
+
+## Aliases
+
+| Alias | Command      | Description                                                       |
+|-------|--------------|-------------------------------------------------------------------|
+| dn    | dotnet new   | Create a new .NET project or file.                                |
+| dr    | dotnet run   | Build and run a .NET project output.                              |
+| dt    | dotnet test  | Run unit tests using the test runner specified in a .NET project. |
+| ds    | dotnet sln   | Modify Visual Studio solution files.                              |
+| da    | dotnet add   | Add a package or reference to a .NET project.                     |
+| dp    | dotnet pack  | Create a NuGet package.                                           |
+| dng   | dotnet nuget | Provides additional NuGet commands.                               |
\ No newline at end of file

plugins/dotnet/dotnet.plugin.zsh

+# --------------------------------------------------------------------- #
+# Aliases and Completions for .NET Core (https://dotnet.microsoft.com/) #
+# Author: Shaun Tabone (https://github.com/xontab)                      #
+# --------------------------------------------------------------------- #
+
+# Helper function to cache and load completions
+local cache_base_path="${ZSH_CACHE_DIR}/dotnet_"
+_dotnet_cache_completion() {
+    local cache="${cache_base_path}$(echo $1)_completion"
+    if [[ ! -f $cache ]]; then
+        $2 $cache
+    fi
+
+    [[ -f $cache ]] && cat $cache
+}
+
+_dotnet_cache_completion_cleanup() {
+    local cache="${cache_base_path}$(echo $1)_completion"
+    rm -f $cache
+}
+
+# --------------------------------------------------------------------- #
+# dotnet new                                                            #
+# ALIAS: dn                                                             #
+# --------------------------------------------------------------------- #
+_dotnet_new_completion() {
+    if [ $commands[dotnet] ]; then
+        dotnet new -l | tail -n +21 | sed 's/  \+/:/g' | cut -d : -f 2 >$1
+    fi
+}
+
+_dotnet_new_completion_cached() {
+    _dotnet_cache_completion 'new' _dotnet_new_completion
+}
+
+_dotnet_cache_completion_cleanup 'new'
+
+alias dn='dotnet new'
+
+# --------------------------------------------------------------------- #
+# dotnet                                                                #
+# --------------------------------------------------------------------- #
+_dotnet() {
+    if [ $CURRENT -eq 2 ]; then
+        _arguments \
+            '--diagnostics[Enable diagnostic output.]' \
+            '--help[Show command line help.]' \
+            '--info[Display .NET Core information.]' \
+            '--list-runtimes[Display the installed runtimes.]' \
+            '--list-sdks[Display the installed SDKs.]' \
+            '--version[Display .NET Core SDK version in use.]'
+
+        _values \
+            'add[Add a package or reference to a .NET project.]' \
+            'build[Build a .NET project.]' \
+            'build-server[Interact with servers started by a build.]' \
+            'clean[Clean build outputs of a .NET project.]' \
+            'help[Show command line help.]' \
+            'list[List project references of a .NET project.]' \
+            'msbuild[Run Microsoft Build Engine (MSBuild) commands.]' \
+            'new[Create a new .NET project or file.]' \
+            'nuget[Provides additional NuGet commands.]' \
+            'pack[Create a NuGet package.]' \
+            'publish[Publish a .NET project for deployment.]' \
+            'remove[Remove a package or reference from a .NET project.]' \
+            'restore[Restore dependencies specified in a .NET project.]' \
+            'run[Build and run a .NET project output.]' \
+            'sln[Modify Visual Studio solution files.]' \
+            'store[Store the specified assemblies in the runtime package store.]' \
+            'test[Run unit tests using the test runner specified in a .NET project.]' \
+            'tool[Install or manage tools that extend the .NET experience.]' \
+            'vstest[Run Microsoft Test Engine (VSTest) commands.]' \
+            'dev-certs[Create and manage development certificates.]' \
+            'fsi[Start F# Interactive / execute F# scripts.]' \
+            'sql-cache[SQL Server cache command-line tools.]' \
+            'user-secrets[Manage development user secrets.]' \
+            'watch[Start a file watcher that runs a command when files change.]'
+        return
+    fi
+
+    if [ $CURRENT -eq 3 ]; then
+        case ${words[2]} in
+        "new")
+            compadd -X ".NET Installed Templates" $(_dotnet_new_completion_cached)
+            return
+            ;;
+        "sln")
+            _values \
+                'add[Add one or more projects to a solution file.]' \
+                'list[List all projects in a solution file.]' \
+                'remove[Remove one or more projects from a solution file.]'
+            return
+            ;;
+        "nuget")
+            _values \
+                'delete[Deletes a package from the server.]' \
+                'locals[Clears or lists local NuGet resources such as http requests cache, packages folder, plugin operations cache  or machine-wide global packages folder.]' \
+                'push[Pushes a package to the server and publishes it.]'
+            return
+            ;;
+        esac
+    fi
+
+    _arguments '*::arguments: _normal'
+}
+
+compdef _dotnet dotnet
+
+# --------------------------------------------------------------------- #
+# Other Aliases                                                         #
+# --------------------------------------------------------------------- #
+alias dr='dotnet run'
+alias dt='dotnet test'
+alias ds='dotnet sln'
+alias da='dotnet add'
+alias dp='dotnet pack'
+alias dng='dotnet nuget'