feat: enable gzip compression of engine-api calls

[0x416e746f6e]

some of the engine api calls that rollup-boost needs to relay to the builder might get relatively big (e.g. newPayload can easily reach 70K).

it would lower the latency b/w rollup-boost and remote builder if those calls could be compressed (even if the sequencer would send them plain-text) => gzip compression of http calls seems to be a good option (enforceable via CLI-parameter)

[SozinM]

Looked into it and it seems that jsonrpsee does not support it, so we will need to rewrite a big chunk of code