Make the block header proof system ready for trackers

[lumtis]

The goal of this epic is to group the necessary tasks to complete to integrate the block header proof system ready to be used with adding trackers.

It includes refactoring to make the functionality modular, improve testing and bug fixing.

### Tasks
- [ ] https://github.com/zeta-chain/node/issues/1491
- [ ] https://github.com/zeta-chain/node/issues/1272
- [ ] https://github.com/zeta-chain/node/issues/1336
- [ ] https://github.com/zeta-chain/node/issues/1485
- [ ] https://github.com/zeta-chain/node/issues/1718
- [ ] https://github.com/zeta-chain/node/issues/1723
- [ ] https://github.com/zeta-chain/node/issues/1875
- [ ] https://github.com/zeta-chain/node/issues/1974
- [ ] https://github.com/zeta-chain/node/issues/1993
- [ ] https://github.com/zeta-chain/node/issues/1994
- [ ] https://github.com/zeta-chain/node/issues/1996
- [ ] https://github.com/zeta-chain/node/issues/1997
- [ ] https://github.com/zeta-chain/node/issues/2012
- [ ] https://github.com/zeta-chain/security/issues/54
- [ ] https://github.com/zeta-chain/security/issues/56
- [ ] https://github.com/zeta-chain/security/issues/61
- [ ] https://github.com/zeta-chain/security/issues/97
- [ ] https://github.com/zeta-chain/security/issues/102
- [ ] https://github.com/zeta-chain/security/issues/108
- [ ] https://github.com/zeta-chain/node/issues/2083
- [ ] https://github.com/zeta-chain/security/issues/114
- [ ] https://github.com/zeta-chain/security/issues/116
- [ ] https://github.com/zeta-chain/node/issues/1847
- [ ] https://github.com/zeta-chain/node/issues/2204