feat: Add comments to AST nodes

This commit introduces support for comments within the AST nodes.
Comments are now parsed by the lexer and stored within the `Token`
struct.
These comments are then propagated through various compiler phases,
including
the `Node` struct, ensuring they are preserved in the Abstract Syntax
Tree.
This change enhances the AST's ability to retain source code
information,
which can be valuable for debugging and analysis.

examples/optimizer_repro.myc

@@ -1,13 +1,15 @@
-;; Benchmark: 102ns
-;; Benchmark-Repeat: 20685
-;; Output: [42 150]
+;; Benchmark: 102ns
+;; Benchmark-Repeat: 20685
+;; Output: [42 150]
 (do
   ;; 1. Provokation Stack-Gap (bei Optimization Level 2)
   (def result 
     (fn [] 
       (do 
-        (def unused 10) ;; Wird entfernt, Slot 0 ist dann "leer"
-        (def used 42)   ;; Bleibt auf Slot 1 -> Lücke!
+        ;; Wird entfernt, Slot 0 ist dann "leer"
+        (def unused 10) 
+        ;; Bleibt auf Slot 1 -> Lücke!
+        (def used 42)   
         used)))
 
   ;; 2. Provokation Inlining-Blockade