Build the Apple Container extension

Turns the empty scaffold into a working Nova extension for Apple Container
and container-compose, in the shape of the Docker Suite extension.

Sidebar (Scripts/Sidebar):
- System, Containers, Images, Volumes and Networks sections
- Containers grouped into compose projects via the com.docker.compose.project
  label container-compose stamps; project rows drive compose up/down/build
  against the matching workspace file
- Lifecycle, shell, logs, inspect, browse and copy commands per resource
- Apple Container publishes no event stream, so the sidebar polls while
  visible and only reloads a section when a fingerprint of its data changes,
  which keeps selection and expansion intact

Hostnames (Scripts/Hostnames.js):
- A container's hostname is <name>.<domain> and the domain lives in Apple
  Container's config.toml, which has no CLI setter, so the Hostname Domain
  preference reads and writes that file directly
- Changing it offers to register the domain with macOS and restart the
  services; the write preserves the file's other tables and its mode

Language support:
- Dockerfile and Compose syntaxes backed by tree-sitter grammars built by
  Tools/build-syntaxes.sh, pinned to revisions that generate ABI 14
- The Compose syntax is named dockercompose because that is the languageId
  docker-language-server recognises compose files by
- docker-language-server is downloaded on first use rather than bundled, at
  roughly 40 MB

Icons are generated by Tools/make-icons.py so they can be regenerated rather
than hand-maintained.

Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01UnSBcR5Lywz5Fbj5FmVbfc

Scripts/Sidebar/TreeItems/ImageTreeItem.js

@@ -0,0 +1,38 @@
+const format = require("../../Utilities/Format");
+
+class ImageTreeItem extends TreeItem {
+	constructor(image, options = {}) {
+		super(options.grouped ? image.tag : label(image), TreeItemCollapsibleState.None);
+
+		this.identifier = image.identifier;
+		this.image = "icons/tag.png";
+		this.contextValue = "image.tag";
+		this.tooltip = image.tooltip;
+		this.descriptiveText = [format.bytes(image.size), format.age(image.created)]
+			.filter((part) => part.length > 0)
+			.join("  ");
+	}
+}
+
+class RepositoryTreeItem extends TreeItem {
+	constructor(repository) {
+		super(
+			repository.name,
+			repository.expanded ? TreeItemCollapsibleState.Expanded : TreeItemCollapsibleState.Collapsed
+		);
+
+		this.identifier = repository.identifier;
+		this.image = "icons/layers.png";
+		this.contextValue = "image.repo";
+		this.descriptiveText = format.bytes(repository.size);
+		this.tooltip = repository.name;
+	}
+}
+
+function label(image) {
+	return nova.config.get("apple_container.images.registry", "boolean")
+		? image.reference
+		: `${image.short}:${image.tag}`;
+}
+
+module.exports = { ImageTreeItem, RepositoryTreeItem };