feat: add prairie upgrade (#524)

* feat(upgrade): add Prairie upgrade constant

* set hardfork config

Author: aweneagle

types/upgrade.go

@@ -44,4 +44,7 @@ const (
 
 	// Tundra is the upgrade name for Tundra upgrade
 	Tundra = "Tundra"
+
+	// Prairie is the upgrade name for Prairie upgrade
+	Prairie = "Prairie"
 )

x/upgrade/types/upgrade_config.go

@@ -50,6 +50,9 @@ const (
 
 	// Tundra is the upgrade name for Tundra upgrade
 	Tundra = types.Tundra
+
+	// Prairie is the upgrade name for Prairie upgrade
+	Prairie = types.Prairie
 )
 
 // The default upgrade config for networks
@@ -111,6 +114,10 @@ var (
 		Name:   Tundra,
 		Height: 25213033,
 		Info:   "Tundra hardfork",
+	}).SetPlan(&Plan{
+		Name:   Prairie,
+		Height: 31432100,
+		Info:   "Prairie hardfork",
 	})
 
 	TestnetChainID = "greenfield_5600-1"
@@ -170,6 +177,10 @@ var (
 		Name:   Tundra,
 		Height: 24007800,
 		Info:   "Tundra hardfork",
+	}).SetPlan(&Plan{
+		Name:   Prairie,
+		Height: 29798400,
+		Info:   "Prairie hardfork",
 	})
 )