add labels to rockspec

rockspecs/evolved.lua-scm-0.rockspec

@@ -1,3 +1,4 @@
+rockspec_format = "3.0"
 package = "evolved.lua"
 version = "scm-0"
 source = {
@@ -7,6 +8,15 @@ description = {
    homepage = "https://github.com/BlackMATov/evolved.lua",
    summary = "Evolved Entity-Component-System for Lua",
    license = "MIT",
+   labels = {
+      "ecs",
+      "entity",
+      "entities",
+      "component",
+      "components",
+      "entity-component",
+      "entity-component-system",
+   },
 }
 dependencies = {
    "lua >= 5.1",