feat: modernize config

- config now is more toml like
- no need to declare all fields, it implements defaults
- no yanderedev code, introspection babbyyy 😎
- desktop and config files parser semi-unification
- misc tweaks all over (mainly allocation failures handling)

include/macros.h

@@ -20,4 +20,6 @@
 #define UNULLABLE
 #endif
 
+#define LEN(X) (sizeof(X) / sizeof((X)[0]))
+
 #endif