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>

tests/patterns/source/main.cpp

@@ -47,7 +47,7 @@ int main(int argc, char **argv) {
             return true;
         };
 
-        runtime.setDataSource(0x00, testFile.getSize(), 
+        runtime.setDataSource(0x00, testFile.getSize(),
             [&](pl::u64 address, pl::u8 *data, size_t size) {
                 testFile.seek(address);
                 testFile.readBuffer(data, size);
@@ -58,7 +58,7 @@ int main(int argc, char **argv) {
         runtime.addPragma("MIME", DummyPragmaHandler);
         runtime.addPragma("description", DescPragmaHandler);
         runtime.addDefine("__PL_UNIT_TESTS__");
-        
+
         runtime.setLogCallback([](auto level, const std::string &message) {
             switch (level) {
                 using enum pl::core::LogConsole::Level;