patch 9.1.1840: Generating prototype files does not work on all platforms

Problem:  Generating prototype files does not work on all platforms
Solution: Rework prototypes generation using python instead of cproto,
          enable it in CI to test it for each PR (Hirohito Higashi).

closes: #18045

Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/os_amiga.h

@@ -56,9 +56,6 @@
 # define TEMPNAMELEN	12
 #endif
 
-// cproto fails on missing include files
-#ifndef PROTO
-
 #include <exec/types.h>
 #include <libraries/dos.h>
 #include <libraries/dosextens.h>
@@ -70,8 +67,6 @@
 # include <proto/intuition.h>
 #endif
 
-#endif // PROTO
-
 #define FNAME_ILLEGAL ";*?`#%" // illegal characters in a file name
 
 /*
@@ -97,7 +92,6 @@ typedef long off_t;
 
 #include <time.h>	// for strftime() and others
 
-#ifndef PROTO
 /*
  * arpbase.h must be included before functions.h
  */
@@ -105,8 +99,6 @@ typedef long off_t;
 # include <libraries/arpbase.h>
 #endif
 
-#endif // PROTO
-
 /*
  * This won't be needed if you have a version of Lattice 4.01 without broken
  * break signal handling.