Actions: Move all Linux packaging into subdir (#7332)

.github/workflows/package_ppa.yml

@@ -1,74 +0,0 @@
-name: Package for Launchpad PPA
-
-on:
-  workflow_call:
-    secrets:
-      PPA_GPG_PRIVATE_KEY:
-        required: true
-    inputs:
-      ppa_repo:
-        description: Meshtastic PPA to target
-        required: true
-        type: string
-      series:
-        description: Ubuntu series to target
-        required: true
-        type: string
-
-permissions:
-  contents: write
-  packages: write
-
-jobs:
-  build-debian-src:
-    uses: ./.github/workflows/build_debian_src.yml
-    secrets: inherit
-    with:
-      series: ${{ inputs.series }}
-      build_location: ppa
-
-  package-ppa:
-    runs-on: ubuntu-24.04
-    needs: build-debian-src
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-        with:
-          submodules: recursive
-          path: meshtasticd
-          ref: ${{github.event.pull_request.head.ref}}
-          repository: ${{github.event.pull_request.head.repo.full_name}}
-
-      - name: Install deps
-        shell: bash
-        run: |
-          sudo apt-get update -y --fix-missing
-          sudo apt-get install -y dput
-
-      - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v6
-        with:
-          gpg_private_key: ${{ secrets.PPA_GPG_PRIVATE_KEY }}
-        id: gpg
-
-      - name: Get release version string
-        working-directory: meshtasticd
-        run: |
-          echo "deb=$(./bin/buildinfo.py deb)" >> $GITHUB_OUTPUT
-        env:
-          BUILD_LOCATION: ppa
-        id: version
-
-      - name: Download artifacts
-        uses: actions/download-artifact@v4
-        with:
-          name: firmware-debian-${{ steps.version.outputs.deb }}~${{ inputs.series }}-src
-          merge-multiple: true
-
-      - name: Display structure of downloaded files
-        run: ls -lah
-
-      - name: Publish with dput
-        if: ${{ github.event_name != 'pull_request_target' && github.event_name != 'pull_request' }}
-        run: |
-          dput ${{ inputs.ppa_repo }} meshtasticd_${{ steps.version.outputs.deb }}~${{ inputs.series }}_source.changes