Migrate to Vue 3.0 #230

- Migrate from "Vue 2.X" to "Vue 3.X"
- Migrate from "Vue Test Utils v1" to "Vue Test Utils v2"

Changes in detail:

- Change `inserted` to `mounted`.
- Change `::v-deep` to `:deep`.
- Change to Vue 3.0 `v-modal` syntax.
- Remove old Vue 2.0 transition name, keep the ones for Vue 3.0.
- Use new global mounting API `createApp`.
- Change `destroy` to `unmount`.
- Bootstrapping:
  - Move `provide`s for global dependencies to a bootsrapper from
    `App.vue`.
  - Remove `productionTip` setting (not in Vue 3).
  - Change `IVueBootstrapper` for simplicity and Vue 3 compatible API.
  - Add missing tests.
- Remove `.text` access on `VNode` as it's now internal API of Vue.
- Import `CSSProperties` from `vue` instead of `jsx` package.
- Shims:
  - Remove unused `shims-tsx.d.ts`.
  - Remove `shims-vue.d.ts` that's missing in quickstart template.
- Unit tests:
  - Remove old typing workaround for mounting components.
  - Rename `propsData` to `props`.
  - Remove unneeded `any` cast workarounds.
  - Move stubs and `provide`s under `global` object.

Other changes:

- Add `dmg-license` dependency explicitly due to failing electron builds
  on macOS (electron-userland/electron-builder#6520,
  electron-userland/electron-builder#6489). This was a side-effect of
  updating dependencies for this commit.

src/presentation/components/Scripts/Menu/MenuOptionList.vue

@@ -28,8 +28,8 @@ $gap: 0.25rem;
   font-family: $font-normal;
   display: flex;
   align-items: center;
-  .items {
-    * + *::before {
+  :deep(.items) {
+    > * + *::before {
       content: '|';
       padding-right: $gap;
       padding-left: $gap;

src/presentation/components/Scripts/Menu/MenuOptionListItem.vue

@@ -1,5 +1,9 @@
 <template>
-  <span> <!-- Parent wrapper allows adding content inside with CSS without making it clickable -->
+  <span>
+    <!--
+      Parent wrapper allows `MenuOptionList` to safely add content inside
+      such as adding content in `::before` block without making it clickable.
+    -->
     <span
       v-bind:class="{
         disabled: !enabled,