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

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1. Initialize simulation tests into the node repository #2960
   test +1
   
2. Initialize simulation tests for import and export #3035
   SIM_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. zetacore : Initialize simulation tests for observer module #3066
   SIM_TESTS m:observer zetacore +3
   
6. zetacore : Initialze simulation tests for fungible module #3099
   SIM_TESTS m:fungible zetacore +3
   
7. Implement advanced crosschain interaction with simulation tests #2973
   m:crosschain m:observer test +3
8. Implement chain and ERC20 whitelisting in simulation tests #2974
   m:fungible m:observer test +3
9. Add admin message simulation in simulation tests #2975
   m:authority test +2
10. Add emission rewards withdraw in simulation test #2976
    m:emissions test +2
11. Investigate including precompiles operations as part of simulation testing #2992
    0 of 4
    test +1
    
12. zetacore : enable gov simulation tests #3007
    SIM_TESTS +1
13. zetacore : Add pebbleDB backend to simulation tests #3004
    SIM_TESTS zetacore +2
14. zetacore : Update documenation for operation weights #3100
    zetacore +1
15. zetacore : fungible Explore deploying contracts using genesis state instead of MsgDeploySystemContracts #3102
    +0
16. zetacore : Enable the sim tests for auth module #3263
    SIM_TESTS +1
    
17. Add support for Solana in SimulateMsgWhitelistERC20 #3287
    SIM_TESTS +1