token: rename Position to Pos, rename position() to pos() (#13279)

vlib/toml/token/pos.v

@@ -4,7 +4,7 @@
 module token
 
 // Position represents a position in a TOML document.
-pub struct Position {
+pub struct Pos {
 pub:
 	len     int // length of the literal in the source
 	line_nr int // the line number in the source where the token occured

vlib/toml/token/token.v

@@ -42,8 +42,8 @@ pub enum Kind {
 }
 
 [inline]
-pub fn (tok &Token) position() Position {
-	return Position{
+pub fn (tok &Token) pos() Pos {
+	return Pos{
 		len: tok.len
 		line_nr: tok.line_nr - 1
 		pos: tok.pos