feat(create-medusa-app): add support for pnpm and specifying package manager (#14443)

* feat(create-medusa-app): add support for pnpm and specifying package manager

* fixes

* add medusa command method

* add tests for package manager

* fix duplicate messages

* throw if chosen package manager is not available

* better package manager and version detector

* add debug message

* fix version detection

* fix for yarn v3

* fix migration command

* yarn v3 fix

* remove .yarn directory for non-yarn package managers

* run npm ci to validate npm installation

* fixes

* fixes

* remove corepack line

* remove if condition

packages/cli/create-medusa-app/jest.config.cjs

@@ -0,0 +1,14 @@
+const defineJestConfig = require("../../../define_jest_config")
+
+module.exports = defineJestConfig({
+  moduleNameMapper: {
+    "^(\\.{1,2}/.*)\\.js$": "$1",
+  },
+  extensionsToTreatAsEsm: [".ts"],
+  testPathIgnorePatterns: [
+    "dist/",
+    "node_modules/",
+    "__fixtures__/",
+    "__mocks__/",
+  ],
+})