Using conan or vcpgk to resolve thirdparty dependencies.

[matrixji]

Now we have to use External Project in cmake to clone the code from GitHub, there will be two issues:

• The initial download size is too large
• It's difficult to build while with a limited network.

Try using conan2(prefer) or vcpkg to manage the dependencies.

[xiaofan-luan]

Now we have to use External Project in cmake to clone the code from GitHub, there will be two issues:

• The initial download size is too large
• It's difficult to build while with a limited network.

Try using conan2(prefer) or vcpkg to manage the dependencies.

Milvus already use conan. Feel free to discuss with @jiaoew1991

[matrixji]

Milvus already use conan. Feel free to discuss with @jiaoew1991
Yes, I see that on master, so I'd like to see conan is the 1st choice for cpp sdk at the moment