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/bson.hexpat

@@ -26,8 +26,8 @@ enum Type : u8 {
     Timestamp           = 0x11,
     Int64               = 0x12,
     Decimal128          = 0x13,
-    
-    MinKey              = 0xFF, 
+
+    MinKey              = 0xFF,
     MaxKey              = 0x7F
 };
 
@@ -78,9 +78,9 @@ using Document;
 
 struct Element {
     Type type;
-    
+
     CString name;
-    
+
     if (type == Type::Double) {
         double value;
     } else if (type == Type::String) {
@@ -93,9 +93,9 @@ struct Element {
         Binary value;
     } else if (type == Type::Undefined) {
         /* undefined */
-    } else if (type == Type::ObjectId) { 
+    } else if (type == Type::ObjectId) {
         ObjectId value;
-    } else if (type == Type::Boolean) { 
+    } else if (type == Type::Boolean) {
         bool value;
     } else if (type == Type::UTCDatetime) {
         type::time64_t value;