Build

`gui/mod-manager`: Add a window showing the active mods in a world (#… #5760

Job	Run time
docs / Build linux64	1m 18s
test / Windows MSVC / Build win64	5m 46s
test / Linux gcc-10 / Build linux64	1m 42s
test / Linux gcc-12 / Build linux64	1m 55s
lint / lint	22s
test / Run Linux test suite (gcc-12, all plugins) / Test (ubuntu, gcc-12, all plugins, default config)	43s
test / Run Linux test suite / Test (ubuntu, gcc-10, default plugins, default config)	39s
test / Run Windows test suite (empty config) / Test (windows, msvc, default plugins, empty config)	1m 16s
test / Run Windows test suite / Test (windows, msvc, default plugins, default config)	57s
	14m 38s

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