Restructure project directories (#333)

`/client/web` -> `/frontend`
`/client/cli` -> *delete for now*
`/client/native` -> *delete for now*
`/core/editor` -> `/editor`
`/core/document` -> `/graphene`
`/core/renderer` -> `/charcoal`
`/core/proc-macro` -> `/proc-macros` *(now plural)*

editor/src/tool/tools/resize.rs

@@ -0,0 +1,34 @@
+use crate::input::keyboard::Key;
+use crate::input::{mouse::ViewportPosition, InputPreprocessor};
+use crate::message_prelude::*;
+use glam::{DAffine2, Vec2Swizzles};
+use graphene::Operation;
+
+#[derive(Clone, Debug, Default)]
+pub struct Resize {
+	pub drag_start: ViewportPosition,
+	pub path: Option<Vec<LayerId>>,
+}
+impl Resize {
+	pub fn calculate_transform(&self, center: Key, lock_ratio: Key, ipp: &InputPreprocessor) -> Option<Message> {
+		let mut start = self.drag_start.as_f64();
+		let stop = ipp.mouse.position.as_f64();
+
+		let mut size = stop - start;
+		if ipp.keyboard.get(lock_ratio as usize) {
+			size = size.abs().max(size.abs().yx()) * size.signum();
+		}
+		if ipp.keyboard.get(center as usize) {
+			start -= size;
+			size *= 2.;
+		}
+
+		self.path.clone().map(|path| {
+			Operation::SetLayerTransformInViewport {
+				path,
+				transform: DAffine2::from_scale_angle_translation(size, 0., start).to_cols_array(),
+			}
+			.into()
+		})
+	}
+}