chore(release): 1.2.0 [skip ci]

Merge pull request #28 from beka-birhanu/graph

docs: udpate README to include graphQL, #24

docs: add graph schema definitoin, #24

fix: add input validation, #24

feat: implement get multiple expenses, #24

fix: change sortfield option createdAt -> date

refactor: move cursor logic to utile to be used by both api types, #24

fix(repo): fix query builder logic for pagination

fix: move amount rounding to domain layer

refacotr: update schema for update expense param, #24

fix: custom marshaling float32 avoid casting to float64, #24

feat: implement patch expense graph api, #24

feat: implement create expense graph endpoint, #24

fix: collect error maping from ierr.IErr to errapi struct, #24