"flipper-pkg" option for creating production bundle

Summary:
Development bundle: NODE_ENV=development, disabled minification, enabled source maps.

Production bundle: NODE_ENV=production, enabled minification, disabled source maps.

Changelog: Added "--production" option for "flipper-pkg bundle" command to produce minified plugin packages without source maps.

Reviewed By: mweststrate

Differential Revision: D22158791

fbshipit-source-id: 0f9ac84ca39ac3fb86f0c0b0a3c1be866445a305

desktop/static/compilePlugins.ts

@@ -135,7 +135,7 @@ async function compilePlugin(
       // eslint-disable-line no-console
       console.log(`⚙️  Compiling ${name}...`);
       try {
-        await runBuild(dir, source, entry);
+        await runBuild(dir, source, entry, false);
       } catch (e) {
         if (failSilently) {
           console.error(