feat: adding metrics to provide insights about the module

go.mod

@@ -3,6 +3,7 @@ module github.com/tendermint/budget
 go 1.16
 
 require (
+	github.com/armon/go-metrics v0.3.9
 	github.com/cosmos/cosmos-sdk v0.44.2
 	github.com/gogo/protobuf v1.3.3
 	github.com/golang/protobuf v1.5.2

x/budget/keeper/budget.go

@@ -1,6 +1,9 @@
 package keeper
 
 import (
+	"github.com/armon/go-metrics"
+
+	"github.com/cosmos/cosmos-sdk/telemetry"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 
@@ -52,6 +55,24 @@ func (k Keeper) CollectBudgets(ctx sdk.Context) error {
 		}
 		for i, budget := range budgetsBySource.Budgets {
 			k.AddTotalCollectedCoins(ctx, budget.Name, budgetsBySource.CollectionCoins[i])
+
+			defer func() {
+				for _, collectionCoins := range budgetsBySource.CollectionCoins {
+					for _, coin := range collectionCoins {
+						if coin.Amount.IsInt64() {
+							telemetry.SetGaugeWithLabels(
+								[]string{types.ModuleName},
+								float32(coin.Amount.Int64()),
+								[]metrics.Label{
+									telemetry.NewLabel("collection_address", budget.CollectionAddress),
+									telemetry.NewLabel("denom", coin.Denom),
+								},
+							)
+						}
+					}
+				}
+			}()
+
 			ctx.EventManager().EmitEvents(sdk.Events{
 				sdk.NewEvent(
 					types.EventTypeBudgetCollected,