Added github workflow to create PR artifacts and release on tag

Author: FozzTexx

Makefile

@@ -3,9 +3,11 @@
 # Set the TARGETS and PROGRAM values as required.
 # See makefiles/build.mk for details on directory structure for src files and how to add custom extensions to the build.
 
-TARGETS = adam atari c64 apple2 apple2enh apple2gs coco
-# TARGETS = pmd85
-# TARGETS = msdos
+TARGETS = adam atari c64 apple2 coco
+# TARGETS += apple2enh # obsolete, removed from cc65
+# TARGETS += apple2gs
+# TARGETS += pmd85
+# TARGETS += msdos
 PROGRAM := fujinet.lib
 
 SUB_TASKS := clean disk test release unit-test