Update to the latest Cosmos SDK: Phase 1

[ashcherbakov]

DCL depends on the Cosmos SDK (and hence Tendermint) which are 2 years old.
Need to update to the latest version because of the following:

• DCL depends on the Cosmos SDK and Tendermint versions which are 2 years old
• Lots of security fixes during these 2 years
  • See changes in between version 0.37.4 and the current version 0.44.2: https://github.com/cosmos/cosmos-sdk/releases
  • See changes in between version 0.32.8 and the current version 0.34.14: https://github.com/tendermint/tendermint/releases
• Better out-of-the-box metrics for load testing in the recent Cosmos SDK
• The latest Cosmos SDK Nodes (Observer, Validators) provide REST API endpoints that can be used by clients, so no need for additional REST server
• Allows to use all recent modules that Cosmos provides
• Allows to contribute to Cosmos upstream, and get more fixes from cosmos upstream'

Acceptance Criteria:

• Use Starport to scaffold a new structure
• Migrate Validator module
• Migrate auth module
• Migrate genutils module
• remove default cosmos sdk modules installed by Starport (staking, cosmos auth etc.)
• necessary changes in client and CLI
• make sure the pool can be run
• make sure integration tests for auth and validators pass