Woodpecker pipelines (#1)

Co-authored-by: Smaug123 <patrick+github@patrickstevens.co.uk>
Reviewed-on: #1

.woodpecker/.all-checks-complete.yml

@@ -0,0 +1,10 @@
+pipeline:
+  echo:
+    image: alpine
+    commands:
+      - echo "All required checks complete"
+
+depends_on:
+  - build
+
+skip_clone: true

.woodpecker/.build.yml

@@ -0,0 +1,21 @@
+pipeline:
+  build:
+    image: nixos/nix
+    commands:
+      - echo ${CI_BUILD_EVENT}
+      - echo ${CI_COMMIT_BRANCH}
+      - echo ${CI_REPO_DEFAULT_BRANCH}
+      # Lint
+      - nix --experimental-features 'nix-command flakes' develop --command cargo -- fmt --all -- --check
+      - nix --experimental-features 'nix-command flakes' develop --command cargo -- clippy -- -D warnings -W clippy::must_use_candidate
+      - nix --experimental-features 'nix-command flakes' develop .#ci --command alejandra -- --check .
+      - nix --experimental-features 'nix-command flakes' develop .#ci --command markdown-link-check README.md
+      # Test
+      - nix --experimental-features 'nix-command flakes' develop --command cargo test --verbose --release
+      - nix --experimental-features 'nix-command flakes' develop --command cargo test --verbose
+      # Run through Nix
+      - nix --experimental-features 'nix-command flakes' build
+      - nix --experimental-features 'nix-command flakes' run
+
+when:
+  evaluate: '(CI_BUILD_EVENT == "push" && CI_COMMIT_BRANCH == CI_REPO_DEFAULT_BRANCH) || (CI_BUILD_EVENT == "pull_request" && CI_COMMIT_BRANCH != CI_REPO_DEFAULT_BRANCH)'