Add GlobalId::Identification::build_global_id

[shetty-tejas]

Inspired from #181.

This PR aims to add a class method to the models that'd give an ability build your own GlobalIDs

Example:

PersonModel.build_global_id(1) => #<GlobalID:0x000000012b7dcea0 @uri=#<URI::GID gid://app/Person/1>>

[nflorentin]

Can't wait to this merged !

Another use case I'm facing: populate a select/options without ajax with a lot of options of mixed models.
Atm, I have to use select instead of pluck which instanciates a lot of active record objects while I could use build_global_id class method to do it.