* Reuse xc_governance logic as much as possible in contract manager
Some functions in xc_governance were moved and refactored in order to become usable in
contract manager
* Add getBaseUpdateFee function for contract manager
* Add method for executeGovernanceInstructions
* Move up SetFee method to base class
* Add governance upgrade instruction
* Move governance payload generators out of contract classes into chain classes
* Switch from json to yaml for storage
* Remove test script for ci
* Add minimal aptos implementation
* Remove global Chains and Contracts variable and put them in DefaultStore
* Move aptos getClient function to Chain class
* Make denom field in baseUpdateFee optional and remove it from non-cosmwasm chains
* More documentation and minor fixes
* Add vaults storage
Although the set of vaults used in testing/production is just 2 it's a good idea to
not set them as predefined constants. So that for development purposes, we can create
new vaults and test them on the fly without changing too many places.
Mohammad Amin Khashkhashi Moghaddam