update README.md

im done :(

feat(chats): add chat schema for chat with ai

feat(contract): add down migration file

feat(documents): add down files for down command

fix: add few columns for contracts table

fix: fix route and missmatch

feat(contract): fix contract business logic

feat(document): add document business logic and route

feat: add contract for feature

fix(entity): add few columns for entites

fix(dto): improve data transfer object

fix(proto): enhance proto files for better feature

feat(contract): enable routes for accessing api

feat(contract): business logic for handling contract management system