feat(medusa-file-local): Local file storage plugin (#4118)

Simple local file storage to eliminate/reduce friction related to file services when developers are trying out Medusa for the first time

packages/medusa-file-local/.gitignore

@@ -0,0 +1,16 @@
+/lib
+node_modules
+.DS_store
+.env*
+/*.js
+!index.js
+yarn.lock
+
+/dist
+
+/api
+/services
+/models
+/subscribers
+/__mocks__
+