Adding token generation before each service API

[soumyadipDe]

Fix for #1323

[chandanchowdhury]

I wonder if the solution would simpler if we

• Move all _get_<Type>_resource to their individual files. Example: _get_compute_resource into cartography/intel/gcp/compute.py
• Pass credentials along with project_id to all type specific code so it can do everything necessary

Basically, __init__.py, finds all projects and then for each project triggers type specific code which does the necessary work and handle all situations.

This way

• we avoid needing to add _sync_single_project_<Type> in __init__.py
• Make testing each type simple as the individual code takes care of everything related to a project and type

Hope I have not confused things.

[soumyadipDe]

I tried the suggestion but as feared it ended up with many changes to the code. Creating another PR to check - #1325

This is still raw and I need to test the change, but wanted to get early review if this is a desired approach to this.

[chandanchowdhury]

@soumyadipDe just checking if you had a chance to test the changes? It looks good to me.