pattern matching: implemented parser

modules/gdscript/gd_tokenizer.cpp

@@ -85,6 +85,7 @@ const char* GDTokenizer::token_names[TK_MAX]={
 "continue",
 "pass",
 "return",
+"match",
 "func",
 "class",
 "extends",
@@ -888,6 +889,7 @@ void GDTokenizerText::_advance() {
 								{TK_CF_BREAK,"break"},
 								{TK_CF_CONTINUE,"continue"},
 								{TK_CF_RETURN,"return"},
+								{TK_CF_MATCH, "match"},
 								{TK_CF_PASS,"pass"},
 								{TK_SELF,"self"},
 								{TK_CONST_PI,"PI"},