Nickakhmetov/Unified Prov Graph

[NickAkhmetov]

WIP

• Converting existing components to TS/refactoring where possible to be more readable

Anticipated approach for unifying prov graphs on dataset pages:

• Fetch last-level descendant ID's for current entity
• Fetch those descendants' prov graph data
• Combine nodes/edge descriptions into one provdata object

[NickAkhmetov]

Closing in favor of new branch based off of main: nickakhmetov/unified-prov-graph