(G)rab, (R)otate, and (S)cale layers with hotkeys (#356)

* Add handler and input mapping.

* Selecting transform type

* Add translation and axis constraints

* Remove unnecessary Key::

* Add rotation

* Centre pivot point for rotation

* Add scaling

* Select Tool bounding box now updates when transforming

* Add typing

* Shift to slow mouse movements

* Add snapping

* Refactor modifier keys

* Refactor to apply only 1 operation per frame

* Refactor to fix scale 0 issue

* Remove logging

* Avoid multiple decimol points in queue

* Add typing negative

* Add typing negative values

* Fix bounding box on apply/abort; fix some variable names

* Allow transform to daffine2 identity

* Revert previous operation when changing operation

* Remove repopulate transforms method

* Code readability tweaks

Co-authored-by: Keavon Chambers <keavon@keavon.com>

frontend/wasm/src/wrappers.rs

@@ -154,6 +154,8 @@ pub fn translate_key(name: &str) -> Key {
 		"}" => KeyRightCurlyBracket,
 		"pageup" => KeyPageUp,
 		"pagedown" => KeyPageDown,
+		"," => KeyComma,
+		"." => KeyPeriod,
 		_ => UnknownKey,
 	}
 }