chore: split notify_slack into separate workflows

- notify-issues.yml: issue notifications
- notify-pr.yml: pull request notifications
- notify-release.yml: callable workflow for release notifications
- release_maven.yml: call notify-release after successful publish

Author: yaythomas

.github/workflows/notify-issues.yml

@@ -0,0 +1,23 @@
+name: Notify Slack - Issues
+
+on:
+  issues:
+    types: [opened, reopened]
+
+permissions: {}
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send issue notification to Slack
+        uses: slackapi/slack-github-action@45a88b9581bfab2566dc881e2cd66d334e621e2c # v3.0.3
+        with:
+          webhook: ${{ secrets.SLACK_WEBHOOK_URL_ISSUE }}
+          webhook-type: incoming-webhook
+          payload: |
+            {
+              "action": "${{ github.event.action }}",
+              "issue_url": "${{ github.event.issue.html_url }}",
+              "package_name": "${{ github.repository }}"
+            }

.github/workflows/notify-pr.yml

@@ -0,0 +1,24 @@
+name: Notify Slack - Pull Requests
+
+on:
+  pull_request_target:
+    types: [opened, reopened, ready_for_review]
+
+permissions: {}
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send pull request notification to Slack
+        if: github.event.pull_request.draft == false
+        uses: slackapi/slack-github-action@45a88b9581bfab2566dc881e2cd66d334e621e2c # v3.0.3
+        with:
+          webhook: ${{ secrets.SLACK_WEBHOOK_URL_PR }}
+          webhook-type: incoming-webhook
+          payload: |
+            {
+              "action": "${{ github.event.action }}",
+              "pr_url": "${{ github.event.pull_request.html_url }}",
+              "package_name": "${{ github.repository }}"
+            }

.github/workflows/notify-release.yml

@@ -0,0 +1,29 @@
+name: Notify Slack - Release
+
+on:
+  workflow_call:
+    inputs:
+      tag_name:
+        required: true
+        type: string
+      release_url:
+        required: true
+        type: string
+
+permissions: {}
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send release notification to Slack
+        uses: slackapi/slack-github-action@45a88b9581bfab2566dc881e2cd66d334e621e2c # v3.0.3
+        with:
+          webhook: ${{ secrets.SLACK_WEBHOOK_URL_RELEASE }}
+          webhook-type: incoming-webhook
+          payload: |
+            {
+              "tag_name": "${{ inputs.tag_name }}",
+              "release_url": "${{ inputs.release_url }}",
+              "package_name": "${{ github.repository }}"
+            }

.github/workflows/notify_slack.yml

@@ -103,3 +103,11 @@ jobs:
         uses: ad-m/github-push-action@4cc74773234f74829a8c21bc4d69dd4be9cfa599 # master
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
+
+  notify-release:
+    needs: [release]
+    uses: ./.github/workflows/notify-release.yml
+    with:
+      tag_name: v${{ github.event.inputs.release_version }}
+      release_url: ${{ github.server_url }}/${{ github.repository }}/releases/tag/v${{ github.event.inputs.release_version }}
+    secrets: inherit