Run oxfmt across repo, add format script and ignore config

Format all non-generated files with oxfmt via `vp fmt`. Add
.oxfmtignore to skip bindings/ and wasm-pack output. Add npm
format script and update DEVELOPMENT.md docs.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crates/yaak-http/Cargo.toml

@@ -19,7 +19,12 @@ hyper-util = { version = "0.1.17", default-features = false, features = ["client
 log = { workspace = true }
 mime_guess = "2.0.5"
 regex = "1.11.1"
-reqwest = { workspace = true, features = ["rustls-tls-manual-roots-no-provider", "socks", "http2", "stream"] }
+reqwest = { workspace = true, features = [
+  "rustls-tls-manual-roots-no-provider",
+  "socks",
+  "http2",
+  "stream",
+] }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 thiserror = { workspace = true }