Enforce shared Rust lint policy and document review rules

portal/Cargo.toml

@@ -5,6 +5,9 @@ edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 
+[lints]
+workspace = true
+
 [[bin]]
 name = "xdg-desktop-portal-ferese"
 path = "src/main.rs"