feat: Implement Canvas rendering system and VitePress exporter plugin

- Add Canvas rendering implementation in `notes/render-canvas.md`
- Create VitePress exporter plugin in `src/main.ts` with commands for exporting notes
- Implement settings management for the plugin in `src/settings.ts`
- Add CSS file for potential styling needs
- Create version bump script in `version-bump.mjs` for managing versioning
- Initialize version tracking in `versions.json`

version-bump.mjs

@@ -0,0 +1,17 @@
+import { readFileSync, writeFileSync } from "fs";
+
+const targetVersion = process.env.npm_package_version;
+
+// read minAppVersion from manifest.json and bump version to target version
+const manifest = JSON.parse(readFileSync("manifest.json", "utf8"));
+const { minAppVersion } = manifest;
+manifest.version = targetVersion;
+writeFileSync("manifest.json", JSON.stringify(manifest, null, "\t"));
+
+// update versions.json with target version and minAppVersion from manifest.json
+// but only if the target version is not already in versions.json
+const versions = JSON.parse(readFileSync('versions.json', 'utf8'));
+if (!Object.values(versions).includes(minAppVersion)) {
+    versions[targetVersion] = minAppVersion;
+    writeFileSync('versions.json', JSON.stringify(versions, null, '\t'));
+}