Feat/plugin develop (#10926)

Fixes: FRMW-2865

In this PR we add support for developing a plugin in watch mode. During the file change, we re-compile the source code (incrementally), publishes the package, and updates the installations of the plugin. 

We are using `yalc` under the hood and it must be installed as a dev dependency in the plugin project and the main Medusa app.

packages/medusa/package.json

@@ -57,7 +57,8 @@
     "@types/multer": "^1.4.7",
     "jest": "^29.7.0",
     "rimraf": "^5.0.1",
-    "typescript": "^5.6.2"
+    "typescript": "^5.6.2",
+    "yalc": "1.0.0-pre.53"
   },
   "dependencies": {
     "@inquirer/checkbox": "^2.3.11",
@@ -130,7 +131,13 @@
     "@mikro-orm/knex": "5.9.7",
     "@mikro-orm/migrations": "5.9.7",
     "@mikro-orm/postgresql": "5.9.7",
-    "awilix": "^8.0.1"
+    "awilix": "^8.0.1",
+    "yalc": "1.0.0-pre.53"
+  },
+  "peerDependenciesMeta": {
+    "yalc": {
+      "optional": true
+    }
   },
   "gitHead": "cd1f5afa5aa8c0b15ea957008ee19f1d695cbd2e"
 }

packages/medusa/src/commands/plugin/develop.ts

@@ -0,0 +1,19 @@
+import * as yalc from "yalc"
+import { logger } from "@medusajs/framework/logger"
+import { Compiler } from "@medusajs/framework/build-tools"
+
+export default async function developPlugin({
+  directory,
+}: {
+  directory: string
+}) {
+  const compiler = new Compiler(directory, logger)
+  await compiler.developPluginBackend(async () => {
+    await yalc.publishPackage({
+      push: true,
+      workingDir: directory,
+      changed: true,
+      replace: true,
+    })
+  })
+}