CI: Add local forgejo CI

Signed-off-by: Vasiliy Doylov <nekocwd@mainlining.org>

.forgejo/workflows/build-alpine.yaml

@@ -0,0 +1,58 @@
+name: PostmarketOS Build
+run-name: PostmarketOS Build
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  prepare:
+    name: Prepare
+    runs-on: Pmbootstrap
+    outputs:
+      time: ${{ steps.time.outputs.time }}
+    steps:
+      - name: Set start Time
+        id: time
+        shell: sh
+        run: echo time=$(date +"%Y%m%d%H%M%S") >> $GITHUB_OUTPUT
+      - name: Update pmbootstrap
+        uses: actions/pmbootstrap-update@master
+      - name: Remove libcamera aport
+        run: rm -rf ${{env.PMB_PMAPORTS}}/temp/libcamera
+
+  build:
+    name: Build for ${{ matrix.info.arch }}
+    runs-on: Pmbootstrap
+    strategy:
+      matrix:
+        info:
+          - arch: x86_64
+          - arch: aarch64
+    needs: prepare
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      - name: Build packages
+        id: build
+        uses: actions/pmbootstrap-build@main
+        with:
+          name: libcamera
+          aports: ${{github.workspace}}/package/alpine
+          arch: ${{ matrix.info.arch }}
+          src: ${{github.workspace}}
+          time: ${{ needs.prepare.outputs.time }}
+      - name: "Upload packages"
+        uses: actions/upload-alpine-package@main
+        with:
+          files: ${{steps.build.outputs.packages}}
+          secret: ${{secrets.PACKAGE_TOKEN}}
+
+  clean:
+    name: "Clean"
+    runs-on: Pmbootstrap
+    needs: build
+    if: always()
+    continue-on-error: true
+    steps:
+      - name: Update pmbootstrap
+        uses: actions/pmbootstrap-update@master

.forgejo/workflows/sync-with-upstream.yaml

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+name: Sync fork with upstream
+run-name: Sync fork with upstream
+on:
+  schedule:
+    - cron: "@daily"
+  workflow_dispatch:
+
+jobs:
+  sync:
+    name: Sync
+    runs-on: Misc
+    steps:
+      - name: Sync repository with upstream
+        uses: actions/sync-with-mirror@main
+        with:
+          secret: ${{ secrets.PUSH_TOKEN }}
+          name: libcamera
+          branch: master