Redesigned everithing so that everything is cleaner and not making everything all messy to fix later, still, ther may be redesigns and shit but should be fine

src/lexer.c

@@ -0,0 +1,8 @@
+#include "lexer.h"
+
+// Helps  state machine for the lexer :)
+typedef enum {
+    WAIT_FOR_NUMBER,
+    WAIT_FOR_OPERATOR,
+} LexerState;
+