idl-api: add idl_type_is_generic()

idl/idl_api.ysl2

@@ -60,11 +60,13 @@ def "func:idl_type_is_of_typekind_struct" {
     result "func:exists(//struct[@name=$idltype])";
 }
 
-def "func:idl_type_is_of_typekind_list" {
+def "func:idl_type_is_generic§" {
     param "idltype";
-    result "false()";
+    result "contains($idltype,'<') and contains($idltype,'>')"
 }
 
+
+// TODO: generic is actually not a typekid, this should return the generic typekind like list/map/pair
 def "func:idl_type_get_typekind_of_type" {
     param "idltype";
     choose {
@@ -76,8 +78,8 @@ def "func:idl_type_get_typekind_of_type" {
             result > enum
         when "func:idl_type_is_of_typekind_struct($idltype)"
             result > struct
-        when "func:idl_type_is_of_typekind_list($idltype)"
+        when "func:idl_type_is_generic($idltype)"
-            result > list
+            result > generic
         otherwise
             result "false()";