lang: parser: Try to add the end values in parser

Not sure if this is right, but it's a start.

lang/interpret_test/TestAstFunc1/polydoubleincludewithtype.txtar

@@ -12,4 +12,4 @@ class c1($a, $b []str) {
 	}
 }
 -- OUTPUT --
-# err: errUnify: type error: list != str: /main.mcl @ 4:1-4:25
+# err: errUnify: type error: list != str: /main.mcl @ 4:1-4:26

lang/interpret_test/TestAstFunc2/fortytwoerror.txtar

@@ -15,4 +15,4 @@ test ["x",] {
 	float32 => $b,
 }
 -- OUTPUT --
-# err: errUnify: type error: int != float: /main.mcl @ 10:6-10:22
+# err: errUnify: type error: int != float: /main.mcl @ 10:6-10:25

lang/interpret_test/TestAstFunc2/res1.txtar

@@ -3,4 +3,4 @@ test "t1" {
 	stringptr => 42, # int, not str
 }
 -- OUTPUT --
-# err: errUnify: type error: str != int: /main.mcl @ 2:2-2:17
+# err: errUnify: type error: str != int: /main.mcl @ 2:2-2:18

lang/interpret_test/TestAstFunc2/unify-interpolate-edge1-fail.txtar

@@ -7,4 +7,4 @@ test "test" {}
 Test["${name}"] -> Test["test"] # must fail
 
 -- OUTPUT --
-# err: errUnify: type error: str != list: /main.mcl @ 6:1-6:15
+# err: errUnify: type error: str != list: /main.mcl @ 6:1-6:16

lang/interpret_test/TestAstFunc2/unify-interpolate-edge2-fail.txtar

@@ -7,4 +7,4 @@ test "test" {}
 Test["test"] -> Test["${name}"] # must fail
 
 -- OUTPUT --
-# err: errUnify: type error: str != list: /main.mcl @ 6:17-6:31
+# err: errUnify: type error: str != list: /main.mcl @ 6:17-6:32

lang/interpret_test/TestAstFunc2/unify-interpolate-res-fail.txtar

@@ -5,4 +5,4 @@ $name = ["a", "bb", "ccc",]
 test "${name}" {} # must fail
 
 -- OUTPUT --
-# err: errUnify: type error: str != list: /main.mcl @ 4:1-4:17
+# err: errUnify: type error: str != list: /main.mcl @ 4:1-4:18