[feature] Circuit Breaker

This contains 1/2 of the circuit breaker. The change here is that if we mint more than the max supply of rune, burn some rune from the reserve to restore the supply at 500m.

The second part is pausing opening of loans in this scenario.

Code Walkthrough https://www.youtube.com/watch?v=e6gZ77DdMrc

x/thorchain/keeper/v1/keeper.go

@@ -399,7 +399,7 @@ func (k KVStore) MintToModule(ctx cosmos.Context, module string, coin common.Coi
 
 	version := k.GetVersion()
 	switch {
-	case version.GTE(semver.MustParse("1.103.0")):
+	case version.GTE(semver.MustParse("1.104.0")):
 		// circuit breaker
 		coin := k.coinKeeper.GetSupply(ctx, common.RuneAsset().Native())
 		maxAmt, _ := k.GetMimir(ctx, "MaxRuneSupply")
@@ -414,7+414,7 @@
 				err := k.BurnFromModule(ctx, ModuleName, burn)
 				if err != nil {
 					ctx.Logger().Error("fail to burn coins during circuit breaker", "error", err)
 					return err
 				}
 				burnEvt := NewEventMintBurn(BurnSupplyType, burn.Asset.Native(), burn.Amount, "circuit_breaker")
 				events, err := burnEvt.Events()