fix: Biome improvements

[Koenkk]

TODO:

• https://biomejs.dev/linter/rules/use-naming-convention/

[Nerivec]

Might have to put useNamingConvention it as a warning for ZHC though, lots of variables with snake case that would break ext. converters if renamed (or lots of biome ignore required). MQTT-bound names will also create troubles.
strictCase option will no doubt generate a lot of refactoring (e.g. HTTPServer => HttpServer). Same for the default PascalCase for enum values (following TypeScript maintainers convention).

[Koenkk]

@Nerivec I added it without making breaking changes