Welcome first-time contributors (#15708)

Co-authored-by: Mike Alhayek <mike@crestapps.com>

.github/workflows/first_time_contributor.yml

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+name: First-time Contributor Welcome
+
+on:
+    issues:
+      types: [opened]
+    pull_request_target:
+      types: [opened, closed]
+
+jobs:
+  first-time-contributor-welcome:
+    runs-on: ubuntu-latest
+    steps:
+    # We don't use the actions/first-interaction action because it can't reference the author, nor can it comment after
+    # PR merge.
+    # Once https://github.com/wow-actions/welcome/pull/12 is merged, we should use https://github.com/wow-actions/welcome
+    # directly.
+    - uses: OrchardCMS/welcome-action@task/update-to-node-20
+      with:
+        FIRST_ISSUE_COMMENT: >
+          Thank you for submitting your first issue, awesome! 🚀 We're thrilled to receive your input. If you haven't 
+          completed the template yet, please take a moment to do so. This ensures that we fully understand your feature 
+          request or bug report. A core team member will review your issue and get back to you.
+        FIRST_PR_COMMENT: >
+          Thank you for submitting your first pull request, awesome! 🚀 If you haven't already, please take a moment 
+          to review our [contribution guide](https://docs.orchardcore.net/en/latest/docs/guides/contributing/). This 
+          guide provides helpful information to ensure your contribution aligns with our standards. A core team member 
+          will review your pull request.
+        FIRST_PR_MERGED_COMMENT: >
+          Congratulations on your first PR merge! 🎉 Thank you for your contribution! We're looking forward to welcome 
+          other contributions of yours in the future. @all-contributors please add @{{ author }} for code.
+        STAR_MESSAGE: If you like Orchard Core, please star our repo and join our [community channels ](https://github.com/OrchardCMS/OrchardCore/?tab=readme-ov-file#get-in-touch)

.github/workflows/issue_metrics.yml

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+name: Monthly Issue and Pull Request Metrics
+on:
+  workflow_dispatch:
+  schedule:
+    # Run on the first day of every month at 2:19 AM UTC.
+    - cron: '19 2 1 * *'
+
+permissions:
+  issues: write
+  pull-requests: read
+
+jobs:
+  publish-issue-metrics:
+    name: Generate Issue and Pull Request Metrics
+    runs-on: ubuntu-latest
+    steps:
+    - name: Get Dates For Last Month
+      shell: pwsh
+      run: |
+        # Calculate the first day of the previous month.
+        $firstDay = (Get-Date).AddMonths(-1).ToString("yyyy-MM-01")
+    
+        # Calculate the last day of the previous month.
+        $lastDay = (Get-Date $firstDay).AddMonths(1).AddDays(-1).ToString("yyyy-MM-dd")
+
+        # Set an environment variable with the date range.
+        Write-Output "$firstDay..$lastDay"
+        Write-Output "LAST_MONTH=$firstDay..$lastDay" >> $env:GITHUB_ENV
+
+    - name: Compute Issue Metrics
+      uses: github/issue-metrics@v2
+      env:
+        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        SEARCH_QUERY: 'repo:OrchardCMS/OrchardCore is:issue created:${{ env.LAST_MONTH }} -reason:"not planned" -label:"community metrics"'
+        HIDE_TIME_TO_ANSWER: true
+
+    - name: Rename Issue Metrics File
+      shell: pwsh
+      run: |
+        # Renaming the file wouldn't work since other scripts will be denied access to it for some reason.
+        Add-Content -Path ./community_metrics.md -Value (Get-Content -Path ./issue_metrics.md -Raw)
+
+    - name: Compute Pull Request Metrics
+      uses: github/issue-metrics@v2
+      env:
+        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        SEARCH_QUERY: 'repo:OrchardCMS/OrchardCore is:pr created:${{ env.LAST_MONTH }} -label:dontmerge -label:notready -is:draft'
+        HIDE_TIME_TO_ANSWER: true
+
+    - name: Concatenate Issue and Pull Request Metrics
+      shell: pwsh
+      run: |
+        $content = (Get-Content -Path ./issue_metrics.md -Raw) -replace '# Issue Metrics', '# Pull Request Metrics'
+        Add-Content -Path ./community_metrics.md -Value ([Environment]::NewLine + $content)
+
+    - name: Compute Q&A Discussion Request Metrics
+      uses: github/issue-metrics@v2
+      env:
+        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        SEARCH_QUERY: 'repo:OrchardCMS/OrchardCore type:discussions created:${{ env.LAST_MONTH }} category:Q&A'
+        HIDE_TIME_TO_CLOSE: true
+
+    - name: Concatenate Issue/PR and Discussion Metrics
+      shell: pwsh
+      run: |
+        $content = (Get-Content -Path ./issue_metrics.md -Raw) -replace '# Issue Metrics', '# Discussion Metrics'
+        Add-Content -Path ./community_metrics.md -Value ([Environment]::NewLine + $content)
+
+    - name: Display Issue Metrics in Summary
+      shell: pwsh
+      run: |
+        Get-Content ./community_metrics.md >> $env:GITHUB_STEP_SUMMARY
+          
+    - name: Create Issue
+      # v4.0.1
+      uses: peter-evans/create-issue-from-file@433e51abf769039ee20ba1293a088ca19d573b7f
+      with:
+        title: Monthly community metrics report for ${{ env.LAST_MONTH }}
+        token: ${{ secrets.GITHUB_TOKEN }}
+        content-filepath: ./community_metrics.md
+        labels: community metrics