* feat: implement chainwork calculations

* feat: introduce new status in blocktx schema

* feat: implement metamorph store methods and test coverage

* feat: first part of integration test added

* feat: err checking for HandleBlock in integration test

* feat: add blockhash checking

* feat: simplify if statement

* feat: handle empty database edge case

* fix: mock test method

* feat: remove unused function

* feat: update database migrations

* feat: update migrations

* feat: avoid repetition of DelBlockProcessing

* feat: improve and refactor blocktx store queries