add more warning flags, correct syntax, add UNUSED macro, […]

- added -Wall -Wextra -pedantic to the compile options
- various syntax has been corrected:
  - static is used before const
  - correct integer types are used in for loops
  - empty newlines are added
- every command has an argc and argv but some don't use them so they are marked as potentially unused if compiled on a GNUC compatible compiler
- mark JSONC variables as advanced so they do not show up as generic variables

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main.h b/src/main.h
index 9a26b6a..e7edf7c 100644
--- a/src/main.h
+++ b/src/main.h
@@ -6,4 +6,4 @@
 COMMAND(main, env);
 COMMAND(main, help);
 
-#endif
\ No newline at end of file
+#endif