Introduce new TreeView UI component

Key highlights:

- Written from scratch to cater specifically to privacy.sexy's
  needs and requirements.
- The visual look mimics the previous component with minimal changes,
  but its internal code is completely rewritten.
- Lays groundwork for future functionalities like the "expand all"
  button a flat view mode as discussed in #158.
- Facilitates the transition to Vue 3 by omitting the Vue 2.0 dependent
  `liquour-tree` as part of #230.

Improvements and features:

- Caching for quicker node queries.
- Gradual rendering of nodes that introduces a noticable boost in
  performance, particularly during search/filtering.
  - `TreeView` solely governs the check states of branch nodes.

Changes:

- Keyboard interactions now alter the background color to highlight the
  focused item. Previously, it was changing the color of the text.
- Better state management with clear separation of concerns:
  - `TreeView` exclusively manages indeterminate states.
  - `TreeView` solely governs the check states of branch nodes.
  - Introduce transaction pattern to update state in batches to minimize
    amount of events handled.
- Improve keyboard focus, style background instead of foreground. Use
  hover/touch color on keyboard focus.
- `SelectableTree` has been removed. Instead, `TreeView` is now directly
  integrated with `ScriptsTree`.
- `ScriptsTree` has been refactored to incorporate hooks for clearer
  code and separation of duties.
- Adopt Vue-idiomatic bindings instead of keeping a reference of the
  tree component.
- Simplify and change filter event management.
- Abandon global styles in favor of class-scoped styles.
- Use global mixins with descriptive names to clarify indended
  functionality.

src/presentation/components/Scripts/View/Tree/NodeContent/NodeContent.vue

@@ -0,0 +1,48 @@
+<template>
+  <DocumentableNode :docs="nodeMetadata.docs">
+    <div id="node">
+      <div class="item text">{{ nodeMetadata.text }}</div>
+      <RevertToggle
+        class="item"
+        v-if="nodeMetadata.isReversible"
+        :node="nodeMetadata" />
+    </div>
+  </DocumentableNode>
+</template>
+
+<script lang="ts">
+import { defineComponent, PropType } from 'vue';
+import { NodeMetadata } from './NodeMetadata';
+import RevertToggle from './RevertToggle.vue';
+import DocumentableNode from './Documentation/DocumentableNode.vue';
+
+export default defineComponent({
+  components: {
+    RevertToggle,
+    DocumentableNode,
+  },
+  props: {
+    nodeMetadata: {
+      type: Object as PropType<NodeMetadata>,
+      required: true,
+    },
+  },
+});
+</script>
+
+<style scoped lang="scss">
+@use "@/presentation/assets/styles/main" as *;
+
+#node {
+  display: flex;
+  flex-direction: row;
+  flex-wrap: wrap;
+  .text {
+    display: flex;
+    align-items: center;
+  }
+  .item:not(:first-child) {
+    margin-left: 5px;
+  }
+}
+</style>