Check tsconfig "references" arrays (#2891)

Closes #2800

This PR makes it so that `check-scripts` will error out if you forget to
add a "references" entry to a tsconfig file when adding an internal
dependency in our monorepo.

If these project references are missed it can prevent TS from
building/rebuilding things when they need to be built/rebuilt.

### Change Type

- [x] `internal` — Any other changes that don't affect the published
package[^2]

apps/vscode/editor/tsconfig.json

@@ -23,5 +23,12 @@
 		"experimentalDecorators": true
 	},
 	"include": ["src", "../messages", "scripts"],
-	"references": [{ "path": "../../../packages/tldraw" }]
+	"references": [
+		{
+			"path": "../../../packages/assets"
+		},
+		{
+			"path": "../../../packages/tldraw"
+		}
+	]
 }

apps/vscode/extension/tsconfig.json

@@ -23,5 +23,12 @@
 		"experimentalDecorators": true
 	},
 	"include": ["src", "../messages", "scripts"],
-	"references": [{ "path": "../../../packages/tldraw" }]
+	"references": [
+		{
+			"path": "../../../packages/editor"
+		},
+		{
+			"path": "../../../packages/tldraw"
+		}
+	]
 }