ci: Rework GitHub workflow files (#35)

.github/workflows/check.yaml

@@ -0,0 +1,38 @@
+name: Check workflow running lint checkers, unit and functional tests
+
+on:
+  pull_request:
+    types: [ opened, synchronize, reopened ]
+    branches: [ master, main ]
+    paths-ignore:
+      - '**.md'
+      - '**.rst'
+
+jobs:
+  lint-unit:
+    uses: canonical/bootstack-actions/.github/workflows/lint-unit.yaml@v2
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.8", "3.10"]
+    with:
+      python-version: ${{ matrix.python-version }}
+      tox-version: "<4"
+
+  func:
+    uses: canonical/bootstack-actions/.github/workflows/func.yaml@v2
+    needs: lint-unit
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - command: "FUNC_ARGS='--series focal' make functional"
+          - command: "FUNC_ARGS='--series jammy' make functional"
+    with:
+      command: ${{ matrix.command }}
+      juju-channel: "3.1/stable"
+      nested-containers: false
+      provider: "lxd"
+      python-version: "3.10"
+      timeout-minutes: 120
+      tox-version: "<4"

.github/workflows/release.yaml

@@ -0,0 +1,25 @@
+# This is a template `release.yaml` file for ops charms
+# This file is managed by bootstack-charms-spec and should not be modified
+# within individual charm repos. https://launchpad.net/bootstack-charms-spec
+
+name: Release to Edge
+
+on:
+  push:
+    branches: [master, main]
+
+concurrency:
+  group: release
+  cancel-in-progress: true
+
+jobs:
+  check:
+    uses: ./.github/workflows/check.yaml
+
+  release:
+    needs: check
+    uses: canonical/bootstack-actions/.github/workflows/charm-release.yaml@v2
+    secrets: inherit
+    with:
+      channel: "latest/edge"
+      upload-image: false