test: add crosschain and observer operations

[kingpinXD]

Description

The pr

• Adds all the operations for crosschain module except MsgMigrateTssFunds . MigrateTSSFunds expects inbound to be paused and no new pending nonces to be generated, which does not fit in well with how simulation tests run

• Adds all the operations for the observer module except . MsgRemoveChainParams . Removing or disabling a chain causes a lot of other simulations to fail, I dont think its required to be added into simulation tests

• Simplifies the init genesis for cross-chain module

Closes
#2973
#2974
#2975
#3100

How Has This Been Tested?

• Tested CCTX in localnet
• Tested in development environment
• Go unit tests
• Go integration tests
• Tested via GitHub Actions

Summary by CodeRabbit

Release Notes

• New Features

  • Added simulation operations for adding, enabling, and disabling observers and cross-chain transactions.
  • Introduced new methods for retrieving policies, all validators, and handling gas price increase flags.
  • New telemetry endpoint /systemtime added to enhance monitoring capabilities.

• Improvements

  • Enhanced error handling and validation across various simulation operations and methods.
  • Improved clarity in error messages and logging for better debugging and tracking.

• Bug Fixes

  • Fixed issues related to the handling of outbound trackers and cross-chain transaction states.

• Documentation

  • Updated comments and documentation for clarity on new features and changes in logic.

[swift1337]

Did a first round on the PR. Solid work!