chore: direct support queries to Discussions

.github/ISSUE_TEMPLATE/bug_report.md

 ---
 name: Bug report
 about: Create a report to help us improve Oh My Zsh
+labels: 'Bug'
 
 ---
 

.github/ISSUE_TEMPLATE/config.yml

 blank_issues_enabled: true
 contact_links:
+  - name: Support
+    url: https://github.com/ohmyzsh/ohmyzsh/discussions
+    about: Ask the community for support
   - name: Get help on Discord
     url: https://discord.gg/ohmyzsh
     about: Have a quick question? Join the Discord server and ask on the appropriate channel.

.github/ISSUE_TEMPLATE/support.md

----
-name: Support
-about: Request support for any problem you're having with Oh My Zsh
-labels: 'Support'
-
----
-
-1. Look for similar issues already posted (including closed ones)
-2. Include as much relevant information as possible
-3. Try to make sure the issue is due to Oh My Zsh