Add module to collect data from Genomics 2 Proteins portal

[abearab]

Request type

New module

Request description

bioRxiv: Genomics 2 Proteins portal: A resource and discovery tool for linking genetic screening outputs to protein sequences and structures

Portal: https://g2p.broadinstitute.org/

Example command

`gget g2p --help`

### G2P3D API (gene to transcript to protein isoform to structure mapping)
Retrieves mapping between protein isoform, transcript, and PDB structures for a gene.

`gget g2p --G2P3D --geneName TP53`

### G2P Protein Feature API
Retrieves protein feature table for a gene.
`gget g2p --protein-features --geneName TP53`

Example return value

No response