Support rearranging layers with hotkeys (#271)

* Support moving single layers

* Fix "Move layer to top/bottom" keybinds

* Rename things named "move" to "reorder"

Fix formatting

* Combine sorted layer helper functions

* Use integer consts for moving layers to front/back

* Fix merge mistake

* Fix some clippy lints

* Fix panic

* Remove "get" prefix from functions

* Bring layer menu items out to sub-menu

* Support moving multiple layers at a time

* Add comment explaining odd keybinding

* Add reordering tests

* Add negative test

* Add new error type

* Add layer position helper, clean up tests

* Make position helper return Result

* Clean up slice iteration

* Simplify source_layer_ids computation

Co-authored-by: Dennis Kobert <dennis@kobert.dev>

client/web/wasm/src/wrappers.rs

@@ -131,6 +131,10 @@ pub fn translate_key(name: &str) -> Key {
 		"arrowdown" => KeyArrowDown,
 		"arrowleft" => KeyArrowLeft,
 		"arrowright" => KeyArrowRight,
+		"[" => KeyLeftBracket,
+		"]" => KeyRightBracket,
+		"{" => KeyLeftCurlyBracket,
+		"}" => KeyRightCurlyBracket,
 		_ => UnknownKey,
 	}
 }