👷 Add format and clippy steps

.woodpecker/.validate.yaml

@@ -1,5 +1,15 @@
 steps:
-  build:
+  - name: format
+    image: rust:latest
+    commands:
+      - cargo fmt --all --check
+
+  - name: clippy
+    image: rust:latest
+    commands:
+      - cargo clippy --all --all-features -- -D warnings
+
+  - name: build
     image: rust:latest
     commands:
       - cargo install dioxus-cli --locked -j ${JOBS_NB:-default}