Ignore connector store in .gitignore

Add /connector/connector-app/store to .gitignore to exclude the connector app's local store from version control. Also normalize the file by ensuring a trailing newline; no changes to the existing /dist/ entry.

Author: alegauss

.gitignore

@@ -31,4 +31,5 @@ hs_err_pid*
 
 .flattened-pom.xml
 dependency-reduced-pom.xml
-/dist/
+/dist/
+/connector/connector-app/store