Needs git tags to be findable on OpenUPM

[StephenHodgson]

OpenUPM tracks Git tags that follow the semver convention. If a valid Git tag is not detected, the package will not be listed on the package listing.

https://openupm.com/packages/com.jimmycushnie.noisynodes/

[rhys-vdw]

@JimmyCushnie would you be open to doing this? You would just need to increment the version in package.json and add a tag. That way we can depend on this library without worrying that it will somehow be removed from GitHub and become inaccessible.