clean: condense own `tsconfig` by removing defaults

[agilgur5]

Summary

Simplify the internal tsconfig used by rpt2 for rpt2 itself by removing configuration that is equivalent to the defaults

Details

• pretty: true and noEmitOnError: false are the defaults

  • https://www.typescriptlang.org/tsconfig#pretty
  • https://www.typescriptlang.org/tsconfig#noEmitOnError

• when strict: true, noImplicitAny, noImplicitThis, and strictNullChecks default to true as well

  • https://www.typescriptlang.org/tsconfig#strict
  • I've heavily contributed to the TSConfig docs and the docs for this property the most