Remove OpenCV and add STB #2380

Job	Run time
python-lint	10s
clang-format	17s
ubuntu-gcc-arm64-build	2m 9s
ubuntu-gcc-build	3m 51s
ubuntu-clang-build	2m 20s
windows-clang-build	6m 8s
ubuntu-clang-arm64-build	2m 30s
macos-clang-build	2m 1s
windows-msvc-build	4m 35s
windows-clang-test	1m 25s
ubuntu-gcc-test	2m 5s
macos-clang-test	1m 2s
ubuntu-clang-test	53s
ubuntu-clang-sanitizer-build	4m 0s
windows-msvc-test	2m 22s
windows-clang-test-extended	2m 19s
ubuntu-gcc-test-extended	0s
macos-clang-test-extended	0s
ubuntu-clang-test-extended	0s
ubuntu-gcc-build-codecov	0s
windows-msvc-test-extended	2m 16s
ubuntu-clang-sanitizer-test	53s
ubuntu-clang-sanitizer-test-extended	0s
ubuntu-gcc-build-perf-stats	0s
	41m 16s

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