Linter update (#1777)

* Update eslint config

* Applied linter to lib

* Applied eslint config to CliClient/app

* Removed prettier due to https://github.com/prettier/prettier/pull/4765

* First pass on test units

* Applied linter config to test units

* Applied eslint config to clipper

* Applied to plugin dir

* Applied to root of ElectronClient

* Applied on RN root

* Applied on CLI root

* Applied on Clipper root

* Applied config to tools

* test hook

* test hook

* test hook

* Added pre-commit hook

* Applied rule no-trailing-spaces

* Make sure root packages are installed when installing sub-dir

* Added doc

ReactNativeClient/lib/fs-driver-rn.js

@@ -141,6 +141,7 @@ class FsDriverRN extends FsDriverBase {
 
 		if (!length) return null;
 		let output = await RNFS.read(handle.path, length, handle.offset, encoding);
+		// eslint-disable-next-line require-atomic-updates
 		handle.offset += length;
 		return output ? output : null;
 	}