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/pfs0.hexpat

@@ -22,7 +22,7 @@ struct Header {
     u32 numFiles;
     type::Size<u32> stringTableSize;
     padding[4];
-    
+
     FileEntry fileEntryTable[numFiles];
     String strings[numFiles];
 };
@@ -33,8 +33,8 @@ struct File {
 };
 
 struct PFS0 {
-    Header header; 
-    
+    Header header;
+
     File files[header.numFiles];
 };