improve shapes loading performance #131

Job	Run time
formatting	42s
msvc (Debug)	5m 59s
msvc (Release)	6m 0s
openapi-validate	18s
ui	33s
linux (linux-amd64-release, linux-amd64)	1m 20s
macos (macos-x86_64, On)	7m 7s
linux (linux-arm64-release, linux-arm64, qemu-aarch64-static)	1m 22s
macos (macos-arm64)	8m 3s
linux (clang-tidy)	2m 33s
linux (linux-sanitizer)	2m 0s
linux (linux-debug, valgrind --leak-check=full --error-exitcode=1)	3m 22s
docker	20s
	39m 39s

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