Add support for line-height

[Winner95]

Hello,

First of all, thank you for making this tool for visual work with css properties!

And I think it is important to support line-height in plugin for building visual typography in css / ui components.

I hope it will be helpful.

[paustint]

@Raathigesh - The code and UI LGTM.

Also, I wonder if we should run prettier on the entire codebase to update everything to make it consistent, so that future PRs do not include a ton of style changes that are unrelated to the actual commit.
example:
On this PR, @Winner95 had prettier change all sorts of code:
bbd9a48 (Prettier made lots of changes)
Then @Winner95 reverted the prettier applied prettier changes:
bbd9a48 (Submitter reverted prettier changes to limit changes that were not related to specific code updates)

@Raathigesh Thoughts?

[Raathigesh]

@Winner95 Thank you for the PR. Looks good to me too 👍

@paustint I agree we should do a prettier run on the codebase. Will do.

[Raathigesh]

@all-contributors please add @Winner95 for code

[allcontributors]

@Raathigesh

I've put up a pull request to add @Winner95! 🎉