Minify main.js to improve plugin load time

Fixes argenos#161

Add minification to the build process for `main.js`.

* **rollup.config.js**
  - Import `esbuild` from `rollup-plugin-esbuild` and `terser` from `rollup-plugin-terser`.
  - Add `esbuild` and `terser` to the `plugins` array for minification.

* **package.json**
  - Add `rollup-plugin-esbuild` as a devDependency.

---

For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/argenos/nldates-obsidian/issues/161?shareId=XXXX-XXXX-XXXX-XXXX).

package.json

@@ -24,7 +24,8 @@
     "obsidian": "latest",
     "prettier": "2.4.1",
     "tslib": "2.4.0",
-    "typescript": "4.7.4"
+    "typescript": "4.7.4",
+    "rollup-plugin-esbuild": "^4.7.0"
   },
   "dependencies": {
     "chrono-node": "github:liamcain/chrono",

rollup.config.js

@@ -1,15 +1,17 @@
-import typescript from "@rollup/plugin-typescript";
-import { nodeResolve } from "@rollup/plugin-node-resolve";
-import commonjs from "@rollup/plugin-commonjs";
-
-export default {
-  input: "src/main.ts",
-  output: {
-    dir: ".",
-    sourcemap: "inline",
-    format: "cjs",
-    exports: "default",
-  },
-  external: ["obsidian"],
-  plugins: [typescript(), nodeResolve({ browser: true }), commonjs()],
-};
+import typescript from "@rollup/plugin-typescript";
+import { nodeResolve } from "@rollup/plugin-node-resolve";
+import commonjs from "@rollup/plugin-commonjs";
+import esbuild from "rollup-plugin-esbuild";
+import { terser } from "rollup-plugin-terser";
+
+export default {
+  input: "src/main.ts",
+  output: {
+    dir: ".",
+    sourcemap: "inline",
+    format: "cjs",
+    exports: "default",
+  },
+  external: ["obsidian"],
+  plugins: [typescript(), nodeResolve({ browser: true }), commonjs(), esbuild({ minify: true }), terser()],
+};