Create similarissues.yml (#4035)

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- [X] I have signed the [Contributor License
Agreement](https://cla.opensource.microsoft.com/microsoft/winget-pkgs).
- [ ] This pull request is related to an issue.

-----

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request

Creates a new GitHub action that makes a bot that will automatically
comment on new issues letting them know about similarly titled issues
using AI. Comments will look like this:


microsoft/terminal#16482 (comment)

The advantage is that users will be able to find related issues faster,
and be able to resolve themselves quicker, with you as a maintainer
having to close out less issues.

<!-- Provide a more detailed description of the PR, other things fixed
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

The bot code is [open sourced
here](https://github.com/craigloewen-msft/GitGudSimilarIssues).

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

Validated on other repos. You can manually validate queries like so: 

https://gitgudissues.azurewebsites.net/api/getsimilarissues/microsoft/powertoys/record%20gifs%20in%20file%20explorer


###### Microsoft Reviewers: [Open in
CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/microsoft/winget-cli/pull/4035)

.github/actions/spelling/expect.txt

@@ -79,6 +79,7 @@ count'th
 countof
 countryregion
 CPIL
+craigloewen
 createmanifestmetadata
 cswinrt
 ctc
@@ -184,6 +185,7 @@ isable
 IServer
 ishelp
 ISQ
+issuetitle
 ISVs
 itr
 IWin
@@ -387,6 +389,8 @@ SHGDN
 SHOWNORMAL
 Sideload
 SIGNATUREHASH
+similarissues
+similaritytolerance
 Sku
 SMTO
 sortof

.github/workflows/similarissues.yml

@@ -0,0 +1,31 @@
+name: GitGudSimilarIssues comments
+
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  getSimilarIssues:
+    runs-on: ubuntu-latest
+    outputs:
+      message: ${{ steps.getBody.outputs.message }}
+    steps:
+      - id: getBody
+        uses: craigloewen-msft/GitGudSimilarIssues@main
+        with:
+          issuetitle: ${{ github.event.issue.title }}
+          repo: ${{ github.repository }}
+          similaritytolerance: "0.7"
+  add-comment:
+    needs: getSimilarIssues
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+      - name: Add comment
+        run: gh issue comment "$NUMBER" --repo "$REPO" --body "$BODY"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NUMBER: ${{ github.event.issue.number }}
+          REPO: ${{ github.repository }}
+          BODY: ${{ needs.getSimilarIssues.outputs.message }}