minor: Add token constructor to SyntaxFactory

Author: Giga-Bowser

src/tools/rust-analyzer/crates/syntax/src/ast/syntax_factory/constructors.rs

@@ -4,7 +4,7 @@ use itertools::Itertools;
 use crate::{
     ast::{self, make, HasName, HasTypeBounds},
     syntax_editor::SyntaxMappingBuilder,
-    AstNode,
+    AstNode, SyntaxKind, SyntaxToken,
 };
 
 use super::SyntaxFactory;
@@ -151,4 +151,8 @@ impl SyntaxFactory {
 
         ast
     }
+
+    pub fn token(&self, kind: SyntaxKind) -> SyntaxToken {
+        make::token(kind)
+    }
 }