Add flatpak.yml and CI

.github/workflows/ci.yml

@@ -0,0 +1,38 @@
+name: CI
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+
+jobs:
+  flatpak:
+    name: Flatpak
+    runs-on: ubuntu-latest
+
+    container:
+      image: ghcr.io/elementary/flatpak-platform/runtime:6.1
+      options: --privileged
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Build
+        uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v3
+        with:
+          bundle: flatpak-authenticator.flatpak
+          manifest-path: io.elementary.flatpak-authenticator.yml
+          run-tests: true
+          repository-name: appcenter
+          repository-url: https://flatpak.elementary.io/repo.flatpakrepo
+          cache-key: "flatpak-builder-${{ github.sha }}"
+
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: elementary/actions/vala-lint@master

io.elementary.flatpak-authenticator.yml

@@ -0,0 +1,17 @@
+app-id: io.elementary.flatpak-authenticator
+runtime: io.elementary.Platform
+runtime-version: '6.1'
+sdk: io.elementary.Sdk
+command: io.elementary.flatpak-authenticator
+finish-args:
+  - '--share=ipc'
+  - '--share=network'
+  - '--socket=fallback-x11'
+  - '--socket=wayland'
+
+modules:
+  - name: flaptak-authenticator
+    buildsystem: meson
+    sources:
+      - type: dir
+        path: .