Format module items after applying fixes

[integraledelebesgue]

When implementing fixers for lints, we need to care for various subtleties related to code formatting (counting indents by hand, detecting line breaks). We could simply format the whole module item after applying fixes. This would happen in LS and scarb-lint

[THenry14]

@integraledelebesgue tbd if this is already done in lint and LS

[Arcticae]

software-mansion/cairols#74
Isn't this somehow duplicate of this?