Fix Stomping Ground not scaling with Melee Damage (#1144)

Confirmed by GGG that it should be scaling with melee damage and that its a bug in the game files that we can see that it isn't currently included.
A future patch to the game will probably add a skilltype flag for the skill so I'm not going to add anything myself for now

Co-authored-by: LocalIdentity <localidentity2@gmail.com>

Author: LocalIdentity

src/Data/Skills/sup_str.lua

@@ -3048,6 +3048,7 @@ skills["StompingGroundShockwavePlayer"] = {
 			baseFlags = {
 				nonWeaponAttack = true,
 				area = true,
+				melee = true,
 			},
 			baseMods = {
 				skill("showAverage", true),

src/Export/Skills/sup_str.txt

@@ -728,7 +728,7 @@ statMap = {
 
 #skill StompingGroundShockwavePlayer
 #set StompingGroundShockwavePlayer
-#flags nonWeaponAttack area
+#flags nonWeaponAttack area melee
 statMap = {
 	["attack_minimum_added_physical_damage_as_%_of_strength"] = {
 		skill("PhysicalMin", nil, { type = "PercentStat", stat = "Str", percent = 1 }),