Large refactor of the entire codebase

Saw that layout really should be separated from the style struct, so went ahead and pulled the trigger...
A bunch of other refactors have also been done

* Lifted layout out of style, its not separate in UI_Box and in UI_State there is not a UI_LayoutCombo stack.
* UI_StyleTheme renamed to UI_StyleCombo
* UI_Theme has both UI_StyleCombo & UI_LayoutCombo
* Made files for the "project" related code
* ui_layout_compute moved to its own file, ui_layout now used for layout related data structures and interfacing
* Impovements to horizontal & vertical box impl
* UI_Box now keeps track of how many ancestors it has

code/env_scratch.odin

@@ -0,0 +1,41 @@
+package sectr
+
+// Scratch space
+
+import rl "vendor:raylib"
+
+DebugData :: struct {
+	square_size : i32,
+	square_pos  : rl.Vector2,
+
+	draw_debug_text_y : f32,
+
+	cursor_locked     : b32,
+	cursor_unlock_pos : Vec2, // Raylib changes the mose position on lock, we want restore the position the user would be in on screen
+	mouse_vis         : b32,
+	last_mouse_pos    : Vec2,
+
+	// UI Vis
+	draw_ui_box_bounds_points : bool,
+	draw_ui_margin_bounds     : bool,
+	draw_ui_anchor_bounds     : bool,
+	draw_UI_padding_bounds    : bool,
+	draw_ui_content_bounds    : bool,
+
+	// Test First
+	frame_2_created : b32,
+
+	// Test Draggable
+	draggable_box_pos  : Vec2,
+	draggable_box_size : Vec2,
+	box_original_size  : Vec2,
+
+	// Test parsing
+	path_lorem    : string,
+	lorem_content : []byte,
+	lorem_parse   : PWS_ParseResult,
+
+	// Test 3d Viewport
+	cam_vp      : rl.Camera3D,
+	viewport_rt : rl.RenderTexture,
+}