feat: add inflation events detailed distribution

proto/nibiru/inflation/v1/event.proto

@@ -0,0 +1,26 @@
+syntax = "proto3";
+package nibiru.inflation.v1;
+
+import "gogoproto/gogo.proto";
+import "cosmos/base/v1beta1/coin.proto";
+
+option go_package = "github.com/NibiruChain/nibiru/x/inflation/types";
+
+// Emitted when inflation is distributed
+message InflationDistributionEvent {
+    cosmos.base.v1beta1.Coin staking_rewards = 1 [
+        (gogoproto.moretags) = "yaml:\"staking_rewards\"",
+        (gogoproto.nullable)= false
+    ];
+
+    cosmos.base.v1beta1.Coin strategic_reserve = 2 [
+        (gogoproto.moretags) = "yaml:\"strategic_reserve\"",
+        (gogoproto.nullable)= false
+    ];
+
+    cosmos.base.v1beta1.Coin community_pool  = 3 [
+        (gogoproto.moretags) = "yaml:\"community_pool\"",
+        (gogoproto.nullable)= false
+    ];
+
+}

x/inflation/keeper/inflation.go

@@ -89,6 +89,14 @@ func (k Keeper) AllocatePolynomialInflation(
 		return sdk.Coin{}, sdk.Coin{}, sdk.Coin{}, nil
 	}
 
+	_ = ctx.EventManager().EmitTypedEvents(
+		&types.InflationDistributionEvent{
+			StakingRewards:   staking,
+			StrategicReserve: strategic,
+			CommunityPool:    community,
+		},
+	)
+
 	return staking, strategic, community, nil
 }