RSDK-8343 - create public version_metadata file

[stuqdog]

No description provided.

[lia-viam]

How about we get the sdk_version() string here, and then check that it matches

std::to_string(sdk_major_version()) + "." + std::to_string(sdk_minor_version()) + "." + std::to_string(sdk_patch_version());

[lia-viam]

Maybe have the function body as

static std::string result = []{
    std::string version_metadata(impl::k_version);
    version_metadata.erase(0, version_metadata.find(';') + 1);
    return version_metadata.substr(0, version_metadata.find(';'));
}();

return result;

That way we only ever do this computation once.

This might seem like a micro optimization, but if this stuff later gets plugged into, eg, the response type of a grpc request that throws out the version, it could easily be hit over and over

[stuqdog]

ooh good thinking! thanks :)

[lia-viam]

Similarly here, we could do something like

static const std::array<int, 3> components =  [] {
    std::array<int, 3> result;
    
    // copy your function here but let the `for` loop parse the `int`s into the array

    return result;
}();

and then your function just returns components[i];