Epic: Validator Client

[Maddiaa0]

### Validator client - essential
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/8028
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7680
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7683
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7684
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7961
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7974
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7962
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7976
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7964
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7965
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7971

### Validator client - nice to haves
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7682
- [ ] https://github.com/AztecProtocol/aztec-packages/issues/7963