Add: workspace settings for better flow support in vscode [ci skip] (…

…#566)

## Reason for Pull Request

- [x] Feature/Change request

### High level description of changes done

- Removes `.vscode` from the `gitignore` so that workspace settings for the project can be applied across team. (like flow enabling flow syntax highlighting) 

Signed-off-by: Trevor Casey <hello@tcasey.me>

.gitignore

@@ -59,7 +59,6 @@ app/.DS_Store
 ios/Pods
 
 # vscode files
-.vscode
 jsconfig.json
 
 # ui automation test folder

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+  "flow.useNPMPackagedFlow": true,
+  "javascript.validate.enable": false,
+}