Use the *_no_config_context extensions

EGL and GLX have extensions (`EGL_KHR_no_config_context`, `GLX_EXT_no_config_context`) that allow contexts to be created without a format config. In turn, contexts created this way can be bound to surfaces of different formats.

We should make the replay service use this extension if it is available in order to 1) support applications that use it and 2) as a safety net regarding format missmatches.

Find out if Windows and OSX have similar extensions/capabilities.