setup build and release action

[LeLunZ]

• upgraded the build.yml based on the official homebridge-plugin-template
• added a release.yml action to publish npm.js
• changed the repository url based on the documentation here because I got a warning when runningnpm publish see below. But the warning still persists even though its documented like that.

npm WARN publish npm auto-corrected some errors in your package.json when publishing.  Please run "npm pkg fix" to address these errors.
npm WARN publish errors corrected:
npm WARN publish "repository.url" was normalized to "git://github.com/MrAsterisco/homebridge-hisense-tv.git"

@MrAsterisco if these actions are good to go, you need to add your npm token to the repositories secrets. (with the key NPM_TOKEN)

[LeLunZ]

I think we can also update the engines and dev dependencies in the package.json?

[LeLunZ]

I added another workflow script which is exactly the same as the publish one, except that it can be triggered manually to publish a beta package. I thought this could be useful to publish changes we arent sure about and let someone else test it.

Will merge for now. If the publish-beta script seems useless, we can also remove it later on.