chore: create a formatting script

format.sh

···
+#!/bin/bash
+
+# Format our code in a similar way as source/python/servo/testing_commands.py
+
+# Format Rust code
+cargo fmt -- \
+    --config unstable_features=true \
+    --config binop_separator=Back \
+    --config imports_granularity=Module \
+    --config group_imports=StdExternalCrate
+
+# Format our Cargo.toml files
+RUST_LOG=error taplo fmt Cargo.toml htmlshell/Cargo.toml

htmlshell/src/vhost.rs

···
 
     // Currently recognized: system, shared, keyboard, homescreen, theme
     // TODO: don't hardcode
-    if app != "homescreen"
-        && app != "keyboard"
-        && app != "settings"
-        && app != "shared"
-        && app != "system"
-        && app != "theme"
+    if app != "homescreen" &&
+        app != "keyboard" &&
+        app != "settings" &&
+        app != "shared" &&
+        app != "system" &&
+        app != "theme"
     {
         return None;
     }
···
         .allow_methods(Any)
         .allow_headers(Any);
 
-    let compression = CompressionLayer::new()
-        .zstd(true);
+    let compression = CompressionLayer::new().zstd(true);
 
     let app = Router::new()
         .route("/{*key}", get(get_file))

rustfmt.toml

···
+match_block_trailing_comma = true
+reorder_imports = true
+style_edition = "2024"

taplo.toml

···
+# upstream files we should not format
+exclude = ["third_party/**", "tests/**"]
+
+[formatting]
+array_auto_collapse = false
+array_auto_expand = false
+align_comments = false
+column_width = 120
+indent_string = "    "