Added initial TemplateMan workflow (#7511)

.github/workflows/templateman.yaml

@@ -0,0 +1,48 @@
+name: 🤖 TemplateMan
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - '**.yaml'
+  workflow_dispatch:
+
+jobs:
+  templateman:
+    runs-on: ubuntu-latest
+    if: github.repository == 'projectdiscovery/nuclei-templates'
+    steps:
+      - uses: actions/checkout@master
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.20.x
+
+      - name: Install TemplateMan CLI Client
+        run: |
+          go install -v github.com/projectdiscovery/nuclei/v2/cmd/tmc@dev
+
+      - name: Run TemplateMan
+        id: tmc
+        run: |
+          tmc -i $GITHUB_WORKSPACE -mr
+          git status -s | wc -l | xargs -I {} echo CHANGES={} >> $GITHUB_OUTPUT
+
+      - name: Commit files
+        if: steps.tmc.outputs.CHANGES > 0
+        run: |
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action"
+          git commit --allow-empty -m "TemplateMan Update [$(date)] :robot:" -a
+
+      - name: Push changes
+        if: steps.tmc.outputs.CHANGES > 0
+        run: |
+          git pull --rebase
+          git push origin ${{ github.ref }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}