build: add forgejo workflows

.forgejo/workflows/push-main.yml

@@ -0,0 +1,38 @@
+name: Release Please
+
+permissions:
+  pull-requests: write
+  contents: write
+
+on:
+  push:
+    branches:
+      - main
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  release-plz:
+    name: Release-plz
+    runs-on: docker
+    
+    container:
+      image:
+        git.kemitix.net/kemitix/rust:v3.1.0
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Run release-plz release-pr
+        run: release-plz release-pr --backend gitea --git-token ${{ secrets.FORGEJO_TOKEN }}
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+
+      - name: Run release-plz release
+        run: release-plz release --backend gitea --git-token ${{ secrets.FORGEJO_TOKEN }}
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

.forgejo/workflows/push-next.yml

@@ -0,0 +1,56 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - next
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: docker
+    
+    container:
+      image:
+        git.kemitix.net/kemitix/rust:v3.1.0
+    
+    strategy:
+      matrix:
+        toolchain:
+          - name: stable
+          - name: nightly
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Ignored Files
+        run: check-for-ignored
+
+      - name: Check TODOs
+        uses: https://git.kemitix.net/kemitix/forgejo-todo-checker@v1.3.0
+
+      - name: Machete
+        run: cargo +${{ matrix.toolchain.name }} machete
+      
+      - name: Format
+        run: cargo +${{ matrix.toolchain.name }} fmt --all --check
+
+      - name: Clippy
+        run: cargo +${{ matrix.toolchain.name }} hack --feature-powerset clippy
+
+      - name: Build
+        run: cargo +${{ matrix.toolchain.name }} hack --feature-powerset build
+
+      - name: Test
+        run: cargo +${{ matrix.toolchain.name }} hack --feature-powerset test
+
+      - name: Mutations
+        run: cargo +${{ matrix.toolchain.name }} mutants -vV --in-place
+