fix: allow packages/types in gitignore

gitignore ignores packages/types in addition to types folders for type definitions
husky > pre-commit (node v14.15.4)
✔ Preparing...
✔ Running tasks...
✖ The following paths are ignored by one of your .gitignore files:
packages/types
Use -f if you really want to add them.
✔ Cleaning up...
husky > commit-msg (node v14.15.4)

Author: trivikr

.gitignore

@@ -39,6 +39,7 @@ codegen/sdk-codegen/smithy-build.json
 coverage
 dist
 types
+!packages/types
 
 /verdaccio/*
 !/verdaccio/config.yaml