Create simulation tests for ZetaCore

[lumtis]

Cosmos offers a framework to enable simulation testing of the blockchain: https://docs.cosmos.network/main/learn/advanced/simulation

This allows having fuzzing like tests and check blockchain behaviors for random inputs (like if a consensus failure is reached)

Enabling simulation tests for a module, requires define a function to generate random message for the chain. Which can be challenging for us to generate given that many of the input are from offchain data. It might potentially be trivial to integrate for the emissions module.

A first step can be just enabling the base simulation testing without inputs from our own modules. So Simulations test can be run for the Cosmos modules.

Simulation test can also be integrated in the CI.

Tasks

Beta Give feedback

1. Initialize simulation tests into the node repository #2960
   test +1
   
2. Initialize simulation tests for import and export #3035
   simulation_tests +1
   
3. Add simulation test runner to the CI #2961
   test +1
   
4. Implement initial version of simulation tests for crosschain functionality #2972
   m:crosschain m:observer test +3
5. Implement advanced crosschain interaction with simulation tests #2973
   m:crosschain m:observer test +3
6. Implement chain and ERC20 whitelisting in simulation tests #2974
   m:fungible m:observer test +3
7. Add admin message simulation in simulation tests #2975
   m:authority test +2
8. Add emission rewards withdraw in simulation test #2976
   m:emissions test +2
9. Investigate including precompiles operations as part of simulation testing #2992
   test +1