feat: Implement aliases for existing functions

[petern48]

Adding aliases is trivial. Like a 5 line PR. Here's an example commit of adding an alias (two actually) 5c75a5c. The syntax changed a bit in this recent PR, but it's still very simple/concise. Took a brief skim through #174, probably missed some

Here's a list of aliases we need to add. I will update as I come across more, let me know if you find more to add to this list.

• ST_GeometryFromText alias for ST_GeomFromText function
• ST_NPoints alias for ST_NumPoints*
• ST_NRings alias for ST_NumRings*

*- not yet implemented at time of writing

[ayushjariyal]

@petern48, I want to solve this issue under Hacktoberfest. Could you please assign it to me?

[petern48]

@ayushjariyal Sure, I've created a new issue to assign you to add the ST_GeometryFromText for ST_GeomFromText, since this issue is more of an umbrella for multiple PRs. In the future, no need to wait to be assigned. Just a quick mention that you're working on something is enough. Or if the PR is short and quick, you can just submit one without waiting.