Add bindings for GD2 APIs

[devyanikota]

Here is a list of APIs that are to be added:

• [x] volume APIs(volume: create, delete, start, restart, stop, set, reset, get, info, status)
• [x] peer APIs( peer: add, remove, status)
• [x] snapshot APIs(create, activate, deactivate, list, info)
• [x] device APIs(devices, device: add, status)
• [ ] georep APIs(georep: create, start, stop, delete, set, get, reset, checkpoint, status)
• [x] bitrot APIs(bitrot: enable, disable, scrub, status)
• [x] events APIs
• [ ] rebalance APIs
• [ ] self-heal/ heal-info APIs
• [ ] quota APIs

More info: glusterd2-endpoints

[devyanikota]

@Madhu-1 am unable to assign the same to you. See if you can do it?

[Madhu-1]

@devyanikota I don't have the permission to assign to myself /others.