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/object_records.myc

@@ -1,5 +1,5 @@
-;; Benchmark: 1.2us
-;; Benchmark-Repeat: 1731
+;; Benchmark: 1.2us
+;; Benchmark-Repeat: 1731
 ;; Output: [150 130 "Insufficient funds" 130]
 
 ; ---------------------------------------------------------
@@ -36,10 +36,12 @@
 
   ; 2. Call 'deposit' method
   ; Note the double parens: (.deposit my-acc) gets the function, then we call it
-  (def b1 ((.deposit my-acc) 50)) ; balance is now 150
+  ; balance is now 150
+  (def b1 ((.deposit my-acc) 50)) 
 
   ; 3. Call 'withdraw' method
-  (def b2 ((.withdraw my-acc) 20)) ; balance is now 130
+  ; balance is now 130
+  (def b2 ((.withdraw my-acc) 20)) 
 
   ; 4. Call 'withdraw' with invalid amount
   (def error-msg ((.withdraw my-acc) 1000))

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

examples/pipeline_script_ticker.myc

@@ -17,7 +17,8 @@
     (pipe [ticker]
       (fn [_]
         (do
-          (def change (* (- (random) 0.5) 2.0)) ; Matches Rust: (rng.f64() - 0.5) * 2.0
+          ; Matches Rust: (rng.f64() - 0.5) * 2.0
+          (def change (* (- (random) 0.5) 2.0)) 
           (def open last-close)
           (def high (+ open (abs (* (random) 2.0))))
           (def low (- open (abs (* (random) 2.0))))