Feature request to add support for semver metadata

I could be missing it in the documentation, but it would be great to support metadata from semver 2.0.

I know beachball now supports --tag and it would also be great to support --meta or --meta-data with the supported argument of regex expression or formatted for example to support +yyyymmdd. My goal would be for beachball to automatically handle bumping for this formatted version x.y.z-tag+meta where my meta is formatted as yyyymmdd. So this may become 1.0.0-next+20201027 following Semver precedence.

Beachballs' semver.inc is the file that would include the + to include the semver metadata and if it at minimal supported the yyyymmdd format and possibly later other string formats that would be idea. For Canary, that information can be found https://github.com/microsoft/beachball/blob/master/src/commands/canary.ts to include the option to specify the metadata. Once that's done we'd probably want to set the dist-tag "dev".

Start by reading Beachball's semver.inc and src/commands/canary.ts to trace version bumping and Canary options. Determine how the requested metadata format and option should flow through those entry points, then verify that versions such as 1.0.0-next+20201027 and the requested dev dist-tag are handled as described.