feat(MT): add seller app
- define Seller model
- add api/registry/sellers/* endpoints
- add seller swagger definition
- add core tests for sellers api check
prozorro-sale/prozorro-registry#278
prozorro-sale/prozorro-registry#278
Pipeline #68355 passed with warnings
Pipeline passed with warnings for b61e3116 on epic/multitrade
added 1 commit
added 1 commit