feat(create-medusa-app): add install Next.js storefront option (#4968)

* feat(create-medusa-app): add install Next.js storefront option

* added config for yes option

* added more instructions to exit message

* handle duplicate directories and next errors

* use next.js branch

* add line break in storefront question

* pass next.js directory name as env variable

* change question message

* address PR feedback

* fix(medusa-cli): remove .git directory in `new` command

* fix deleting a directory error

.changeset/nine-peas-draw.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa-cli": patch
+---
+
+fix(medusa-cli): remove .git directory in `new` command

.changeset/two-kids-thank.md

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+---
+"create-medusa-app": minor
+---
+
+feat(create-medusa-app): add install Next.js storefront option