git: Various style fixes everywhere, removing whitespaces (#321)

* repo-wide: trim trailing spaces

Note: This doesn't touch the .tbl files in encodings/ since they include
meaningful trailing spaces (`20= `)

* patterns: clean up duplicate semicolons

* ELF: add header magic check

* glTF: use type::Magic for magic value

* glTF: check that the file size in the header matches

* xgstexture: fix generics syntax for magic value

* JPEG: define hex enum with 0x00 instead of 0X00

* CI: update deprecated actions

---------

Co-authored-by: Nik <werwolv98@gmail.com>

patterns/vdf.hexpat

@@ -15,9 +15,9 @@ enum Type : u8 {
 
 struct Entry {
 	Type type;
-	
+
 	char name[];
-	
+
 	if (type == Type::Set) {
 		Entry entries[while (std::mem::read_unsigned($, 1) != Type::EndSet)];
 		Type endSet [[hidden]];