ci: add PR pipeline (push) with fmt+clippy+test (linux only)

.pre-commit-config.yaml

@@ -9,6 +9,7 @@ repos:
       - id: trailing-whitespace
       - id: end-of-file-fixer
       - id: check-yaml
+        args: ['--allow-multiple-documents']
       - id: check-toml
       - id: check-merge-conflict
       - id: check-added-large-files

.woodpecker.yml

@@ -1,3 +1,25 @@
+---
+kind: pipeline
+name: pr-checks
+
+when:
+  event:
+    - push
+    - pull_request
+
+steps:
+  - name: fmt-clippy-test
+    image: rust:1.83
+    commands:
+      - rustup component add rustfmt clippy
+      - cargo fmt --all -- --check
+      - cargo clippy --workspace --all-features -- -D warnings
+      - cargo test --workspace --all-features
+
+---
+kind: pipeline
+name: release
+
 when:
   event: tag
   tag: v*