[python/tests/utils]game_controller.py] Propagate exceptions (#244)

[level_generation] Remove "u8" prefix from string literals.

[level_generation] Replace custom loop with absl::StrJoin.

[maze_generation] Remove unused using-declaration

Replace deepmind/support/logging.h with Abseil, inclusion cleanup.

[q3map2/BUILD] Say "include" explicitly when "exclude" is present

[third_party/GL] Update EGL header

[third_party/GL] Support static linking of OpenGL libs on Windows

[BUILD files] Remove license comments

[third_party/GL] Clarify documentation.

[util/file_reader_test.cc] Initialize `handle` out-parameter.

[engine] Initialize various PlayerInfo vectors (with zeros).

Change the C++ version requirement from C++11 to C++17

[actions, BUILD] Only test for Python 3 in precommit action.

[actions] Update action runner env to ubuntu-22.04 (up from 20.04)