added upgrade plan (lavanet#200)

Co-authored-by: Yarom Swisa <[email protected] git config --global user.name Yarom>

app/app.go

@@ -115,7 +115,7 @@ const (
 )
 
 // Upgrades add here future upgrades (upgrades.Upgrade)
-var Upgrades = []upgrades.Upgrade{}
+var Upgrades = []upgrades.Upgrade{upgrades.Upgrade_0_4_0}
 
 // this line is used by starport scaffolding # stargate/wasm/app/enabledProposals
 

app/upgrades/empty_upgrades.go

@@ -0,0 +1,19 @@
+package upgrades
+
+import (
+	store "github.com/cosmos/cosmos-sdk/store/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/types/module"
+	upgradetypes "github.com/cosmos/cosmos-sdk/x/upgrade/types"
+	"github.com/lavanet/lava/app/keepers"
+)
+
+var Upgrade_0_4_0 = Upgrade{
+	UpgradeName: "v0.4.0", // upgrade name defined few lines above
+	CreateUpgradeHandler: func(m *module.Manager, c module.Configurator, bapm BaseAppParamManager, lk *keepers.LavaKeepers) upgradetypes.UpgradeHandler {
+		return func(ctx sdk.Context, plan upgradetypes.Plan, vm module.VersionMap) (module.VersionMap, error) {
+			return m.RunMigrations(ctx, c, vm)
+		}
+	}, // create CreateUpgradeHandler in upgrades.go below
+	StoreUpgrades: store.StoreUpgrades{}, // StoreUpgrades has 3 fields: Added/Renamed/Deleted any module that fits these description should be added in the way below
+}