started work on lexer

tests/types.pla

@@ -0,0 +1,18 @@
+depend "io.pla"
+
+enum Gender {
+	male,
+	female
+}
+
+struct Person {
+	name: String,
+	age: Int = 0,
+	speak: Func
+}
+
+speak = Func(sentence: String): Nil {
+	print(sentence)
+} 
+
+max: Person = {"Max", 17, }