HyperCore simulator: increase robustness and readability of test suite

[0xjuaan]

All tests for the testing framework are in the CoreSimulatorTest.t.sol file. Also there are only 1-2 tests per function, so there could be many buggy edge cases in the simulator which haven't been reached via tests.

Tasks

• Separate tests into different files (staking, trading, bridging, etc)
• Have 100% test coverage of all core simulation actions, with valid assertions for each test (this is mostly achieved already)
• Implement additional tests with different tokens, price settings, etc
  • specifically, the trading flows should be tested with at least uBTC, HYPE, uSOL (as base tokens), and USDC, USDT0 (as quote tokens).

[NehharShah]

@0xjuaan can I work on this issue

[syed-ghufran-hassan]

Can I work on this issue?

[0xjuaan]

@NehharShah feel free to work on it

[suhas-sensei]

@0xjuaan would love to work on this, hope i can be assigned.

[0xjuaan]

@suhas-sensei sure

[suhas-sensei]

thanks a lot ser, I'm on it.

[suhas-sensei]

@0xjuaan pr up for review

[0xjuaan]

thanks @suhas-sensei will review and get back within 2-3 days