feat: enhance compiler

- Add comments and test for it
- Add semicolon as required end of some expressions
- Add new arguments parser
- Add multi-file compilation
- Add colors in output

exl/variables.fzs

@@ -1,13 +1,13 @@
-uint work_it = 21 * 2 ^ 2
-int  make_it = 10 
+uint work_it = 21 * 2 ^ 2;
+int  make_it = 10;
 
-u64  do_it
-do_it = 15
+u64  do_it;
+do_it = 15;
 
-printline(work_it)
-printline(make_it + do_it)
+printline(work_it);
+printline(make_it + do_it);
 
-char make_us
-str floyd = "hello, Pink Floyd!"
-printline(floyd)
+char make_us;
+str floyd = "hello, Pink Floyd!";
+printline(floyd);