feat: standalone to consumer changeover part 1 (cosmos#757)

* on-chain upgrade to consumer chain wip

* add preCCV store and use it on democracy staking

* add TODOs and one more packet possibility

* status update

* Resolve hermes start issue for trusted validator set by changing revision height

* remove intermediary logs

* remove further unused codebase

* updates for endblocker test, existing test fixes, get last validators

* update for slashing sovereign validators for the fault made before consumer chain upgrade height

* resolve comments on github and slack communication

* update sovereign app to use v4 ibc from v3 & resolve consumer module merge conflict fix issue

* Update app/sovereign/upgrades/v3/upgrades.go

Co-authored-by: yaruwangway <[email protected]>

* rm sovereign chain and tests. Will be replaced by simapp and integration tests

* duplicate module name

* add comment

* small rename

* remove democracy staking changes

* consumer ccv beginblock, endblock, and initgenesis order shouldn't matter

* add mock calls to compile

* adjust tests for new keeper field

* add registerDemocConsumer method

* split out preCCV flag and initial valset

* cleanup consumer module

* cleanup

* more cleanup

* temp changes to validators.go

* comment out test

* rm bad code from merge

* comment

* Update app.go

* UTs for CRUD

* UTs for keys

* use make for mocks

* todo

* changeover method and test

* resolve cosmos#783

* comment

* comments

* add appropriate TODOs, restore changes to main

* final nits before non-draft

* comment on ChangeoverToConsumer

* more clear comment

* small comment change

* update InitGenesis comment

* sovereign -> standalone

* missed a file

* builds now

* update comment after debug

* naming refactor

* edge case for val in old and new sets

* restore keys after rebase

---------

Co-authored-by: jstr1121 <[email protected]>
Co-authored-by: jstr1121 <[email protected]>
Co-authored-by: yaruwangway <[email protected]>

Author: 3 people

proto/interchain_security/ccv/consumer/v1/genesis.proto

@@ -40,6 +40,7 @@ message GenesisState {
   // LastTransmissionBlockHeight nil on new chain, filled in on restart.
   interchain_security.ccv.consumer.v1.LastTransmissionBlockHeight last_transmission_block_height = 12
   [ (gogoproto.nullable) = false ];
+  bool preCCV = 13; // flag indicating whether the consumer CCV module starts in pre-CCV state
 }
 
 // HeightValsetUpdateID defines the genesis information for the mapping