add Cargo.lock to fix too new version break build

[ningmingxiao]

because ttrpc-compiler update to 0.6.3 will cause build error.
now some tag and release version can't use cargo build (some package was updated).So it is necessary to add vendor or Cargo.lock to project.

@mxpv @Burning1020
can you review this pr ? Thank you.

[mxpv]

Cargo.lock would make more sense for binaries.
I think we should start pinning ttrpc version in Cargo.toml (like ttrpc = "=exact_version") since there are breaking changes every now and then.

[mxpv]

I've pinned ttrpc versions. Going to close this one.