auto-sync upstream and update stable branch

- Automatically sync upstream master branch
  and all tags everyday at 00:00
- Update mamolinux/stable branch with latest tag

.github/workflows/auto-sync-upstream.yml

@@ -0,0 +1,57 @@
+# Automatically fetch and merge upstream master branch and tags
+
+name: Scheduled Sync Upstream Action
+on:
+  schedule:
+    # scheduled once a day
+    - cron: '0 0 */1 * *'
+
+  workflow_dispatch: # on button click
+    inputs:
+      upstream:
+        description: 'Upstream repository (eg. linuxmint/cinnamon)'
+        required: true
+        default: 'wimpysworld/deb-get'       # set the upstream repo
+      upstream-branch:
+        description: 'Upstream branch to merge from. Eg. master'
+        required: true
+        default: 'main'           # set the upstream branch to merge from
+      branch:
+        description: 'Branch to merge to'
+        required: true
+        default: 'main'         # set the branch to merge to
+
+jobs:
+  # This workflow contains a single job called "sync-upstream"
+  sync-upstream:
+    runs-on: ubuntu-latest
+    steps:
+      # Set default branches when run as scheduled job
+      - name: Set the branches
+        env:
+          DEFAULT_UPSTREAM: 'wimpysworld/deb-get'      # set the upstream repo
+          DEFAULT_UPSTREAM_BRANCH: 'main'           # set the upstream branch to merge from
+          DEFAULT_BRANCH: 'main'                    # set the branch to merge to
+        run: |
+          echo "upstream=${{ github.event.inputs.upstream || env.DEFAULT_UPSTREAM }}" >> $GITHUB_ENV
+          echo "upstream-branch=${{ github.event.inputs.upstream-branch || env.DEFAULT_UPSTREAM_BRANCH }}" >> $GITHUB_ENV
+          echo "branch=${{ github.event.inputs.branch || env.DEFAULT_BRANCH }}" >> $GITHUB_ENV
+      
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ env.branch }}             # set the branch to merge to
+          # Number of commits to fetch. 0 indicates all history for all branches and tags.
+          fetch-depth: 0
+
+      - name: Fetch and Merge Upstream Branch
+        uses: exions/merge-upstream@v1
+        with:
+          upstream: ${{ env.upstream }}
+          upstream-branch: ${{ env.upstream-branch }}
+          branch: ${{ env.branch }}
+          token: ${{ secrets.TOKEN }}
+
+      - name: Push All Tags
+        run: |
+          git push origin --tags

.github/workflows/update-stable.yml

@@ -0,0 +1,53 @@
+# Automatically fetch and merge latest tag to mamolinux/stable for new stable releases
+name: Update mamolinux/stable branch
+
+# Controls when the action will run. 
+on:
+  push:
+    tags: ['*']
+
+  workflow_dispatch: # on button click
+    inputs:
+      branch:
+        description: 'Branch to merge to'
+        required: true
+        default: 'mamolinux/stable'         # set the branch to merge to
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "sync-new-release"
+  sync-new-release:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@master
+        with:
+          fetch-depth: 0
+
+      # Set default branches when run as scheduled job
+      - name: Set the branches
+        env:
+          DEFAULT_UPSTREAM_BRANCH: 'main'           # set the upstream branch to merge from
+          DEFAULT_BRANCH: 'mamolinux/stable'                    # set the branch to merge to
+        run: |
+          git checkout ${{ env.DEFAULT_UPSTREAM_BRANCH }}
+          echo "latest-tag=`git describe --abbrev=0 --tags`" >> $GITHUB_ENV
+          echo "branch=${{ github.event.inputs.branch || env.DEFAULT_BRANCH }}" >> $GITHUB_ENV
+      
+      - name: Set Git config
+        run: |
+          git config --local user.email "actions@github.com"
+          git config --local user.name "Github Actions"
+      
+      - name: Update mamolinux/stable for new release
+        run: |
+          git branch -D ${{ env.branch }}
+          git checkout -b ${{ env.branch }} ${{ env.latest-tag }}
+          sudo apt-get -y update
+          sudo apt-get -y install debhelper devscripts
+          REL_VER=$(grep "^readonly VERSION" deb-get | cut -d'"' -f2)
+          dch -v "${REL_VER}-1" --distribution=unstable "New upstream release."
+          git push -f origin ${{ env.branch }}