Add build:local script

[M-i-k-e-l]

Description

Add a script to build changes locally.
Usage:

1. npm run build:local
2. Extract react-native-ui-lib-5.0.0.tgz (preferably in another location).
3. Replace react-native-ui-lib in your node_modules (probably backup or delete your current node_modules/react-native-ui-lib).
4. Delete react-native-ui-lib-5.0.0.tgz.
5. package.json will change, take extra care if you have changes there.

Note: I've added a warning if the user has untracked files (which will be deleted without this).

CC @Inbal-Tish @lidord-wix @adids1221

Changelog

None

[ethanshar]

@M-i-k-e-l
Reminder: check for changes in package.json. And revert the change we do as part of the build

[M-i-k-e-l]

check for changes in package.json. And revert the change we do as part of the build

Done.
Sadly it is impossible to change the folder name (package) without expanding it, so I chose not to do it.

[ethanshar]

Will it always be 5.0.0?

[M-i-k-e-l]

I believe it comes from our package.json's version, so it should not change since we do not really update it.

[ethanshar]

Maybe mv to the user Downloads folder?

[M-i-k-e-l]

Good idea, this should probably remove the need for the ignore, and solve the above comment.

[ethanshar]

Wrote some comment, anyway approved.
nice work (: