add 2 helper methods for building KVPair(s)

types/kvpair.go

@@ -0,0 +1,19 @@
+package types
+
+// KVPairInt is a helper method to build KV pair with an integer value.
+func KVPairInt(key string, val int64) *KVPair {
+	return &KVPair{
+		Key:       key,
+		ValueInt:  val,
+		ValueType: KVPair_INT,
+	}
+}
+
+// KVPairString is a helper method to build KV pair with a string value.
+func KVPairString(key, val string) *KVPair {
+	return &KVPair{
+		Key:         key,
+		ValueString: val,
+		ValueType:   KVPair_STRING,
+	}
+}