Refactor schema and index management to have unique interface

[farodin91]

Describe the feature: Currently, our schema and management has no clean interface. It would be good clean up the interface. We see a lot of users that having problems with our schema management or index management.

Describe a specific use case for the feature:

• unique interface
• index status (enable of a index)
• manage from a driver

---

Current state:

• [x] Get Vertices #2527 and #2560
  • [ ] ttl
  • [x] static
  • [x] partition
• [x] Get Vertex Properties #2940
  • [ ] ttl
• [x] Get Edge #2548 and #2560
  • [ ] ttl
• [x] Get Edge Properties #2995
  • [ ] ttl
• [ ] Get Composite Index
  • [ ] vertex #3011
• [ ] Get Mixed Index
• [ ] Get Vertex centric index

---

Start with writing

• [ ] Create Vertex
• [ ] Create Vertex Properties
• [ ] Create Edge
• [ ] Create Edge Properties
• [ ] Create Composite Index
• [ ] Create Mixed Index
• [ ] Create Vertex centric index
• [ ] Update Vertex
• [ ] Update Vertex Properties
• [ ] Update Edge
• [ ] Update Edge Properties
• [ ] Update Composite Index
• [ ] Update Mixed Index
• [ ] Update Vertex centric index

---

Other funcs:

• [ ] reindex
• [ ] config management
• [ ] multi graph management

[CrazyBeeline]

Cheer! Janusgraph provides official management API