Add file browser application #1364

Job	Run time
doxygen	0s
mingw / build mingw (Release)	4m 30s
android / build_android (Release, android_arm64_v8a, 6.6.2)	3m 32s
macos / build_macos (Release, 6.6.2, clang_64)	2m 4s
mingw / build mingw (Debug)	4m 28s
android / build_android (Release, android_x86_64, 6.6.2)	2m 54s
macos / build_macos (Release, 5.15.2, clang_64)	1s
macos / build_macos (Release, 5.12.12, clang_64)	2m 13s
macos / build_macos (Debug, 6.6.2, clang_64)	2m 5s
ubuntu / build_ubuntu (Release)	3m 24s
ubuntu / build_ubuntu (Debug)	3m 41s
msvc / build_msvc (Release, 6.6.2)	5m 11s
macos / build_macos (Debug, 5.15.2, clang_64)	1m 59s
msvc / build_msvc (Release, 5.15.2)	4m 21s
macos / build_macos (Debug, 5.12.12, clang_64)	2m 5s
msvc / build_msvc (Release, 5.12.12)	4m 36s
msvc / build_msvc (Debug, 6.6.2)	4m 15s
msvc / build_msvc (Debug, 5.15.2)	3m 34s
msvc / build_msvc (Debug, 5.12.12)	3m 31s
deploy	0s
	58m 24s

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