feat: support struct parse (#4) #8

Job	Run time
FreeBSD-x86_64 with rust stable	13s
FreeBSD-x86_64 with rust nightly	12s
Linux-x86_64 with rust stable	42s
Linux-x86_64 with rust nightly	38s
Linux-aarch64 with rust stable	59s
Linux-aarch64 with rust nightly	1m 54s
Linux-arm with rust stable	1m 24s
Linux-arm with rust nightly	1m 9s
windows-aarch64 with rust stable	37s
windows-aarch64 with rust nightly	35s
windows-x86_64 with rust stable	1m 30s
windows-x86_64 with rust nightly	1m 27s
macos-x86_64 with rust stable	44s
macos-x86_64 with rust nightly	54s
macos-aarch64 with rust stable	24s
macos-aarch64 with rust nightly	30s
	13m 52s

Provide feedback