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

.github/workflows/nightly.yml

@@ -1,39 +0,0 @@
-name: Nightly
-on:
-  schedule:
-    - cron: 0 8 * * 1-5
-  workflow_dispatch: {}
-
-permissions: read-all
-
-jobs:
-  trunk_check:
-    if: github.repository == 'meshtastic/firmware'
-    name: Trunk Check and Upload
-    runs-on: ubuntu-24.04
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Trunk Check
-        uses: trunk-io/trunk-action@v1
-        with:
-          trunk-token: ${{ secrets.TRUNK_TOKEN }}
-
-  trunk_upgrade:
-    if: github.repository == 'meshtastic/firmware'
-    # See: https://github.com/trunk-io/trunk-action/blob/v1/readme.md#automatic-upgrades
-    name: Trunk Upgrade (PR)
-    runs-on: ubuntu-24.04
-    permissions:
-      contents: write # For trunk to create PRs
-      pull-requests: write # For trunk to create PRs
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Trunk Upgrade
-        uses: trunk-io/trunk-action/upgrade@v1
-        with:
-          base: master