feat(ui): macro ui improvement (#473)

* Remove the "Input the text you want to type with this macro action." sentence from the type text macro action.

* Move pointer and Scroll enhancement

* remove the extra vertical space above the mouse buttons

* macro delay enhancement

* not allow user select on a few elements

* fill the macro, keymap name the all space in the header

packages/uhk-web/src/app/util/html-helper.ts

@@ -0,0 +1,17 @@
+let canvas: HTMLCanvasElement;
+
+export function getContentWidth(style: CSSStyleDeclaration, text: string): number {
+    if (!text) {
+        return 0;
+    }
+
+    if (!canvas) {
+        canvas = document.createElement('canvas');
+    }
+
+    const context = canvas.getContext('2d');
+    context.font = style.font;
+    const metrics = context.measureText(text);
+
+    return metrics.width;
+}

packages/uhk-web/src/app/util/index.ts

@@ -0,0 +1 @@
+export * from './html-helper';