Add some Canon RF lenses w/ ext #1502

Job	Run time
Emscripten	2m 57s
FreeBSD	4m 14s
macOS-deps=enabled	1m 25s
MSYS	2m 28s
MSYS2-UCRT64-deps=enabled	4m 58s
macOS-deps=disabled	1m 1s
Linux-GCC7-deps=forcefallback	8m 35s
MSYS2-CLANG64-deps=enabled	3m 30s
Linux-GCC7-deps=default	1m 26s
MSYS2-UCRT64-deps=disabled	3m 35s
Linux-Clang7-deps=forcefallback	8m 34s
Linux-GCC13-deps=forcefallback	12m 37s
MSYS2-CLANG64-deps=disabled	2m 48s
MSVC-forcefallback-x64	4m 33s
Linux-Clang7-deps=default	1m 41s
Linux-GCC13-deps=default	7m 5s
MSVC-forcefallback-x86	4m 49s
Linux-Clang19-deps=forcefallback	9m 39s
MSVC-default-x64	3m 22s
Linux-Clang19-deps=default	2m 17s
clang-cl-forcefallback	5m 11s
MSVC-default-x86	3m 30s
clang-cl-default	3m 34s
	1h 43m 49s

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