Install contrib libraries

[fdr400]

Resolves #408

To check:

$ cmake -S . -B build -DCMAKE_INSTALL_PREFIX=/usr/local
$ cmake --build build
$ cmake --install install

It installs:

-- Install configuration: "RelWithDebInfo"
-- Installing: /usr/local/lib/libclickhouse-cpp-lib.a
-- Installing: /usr/local/lib/libcityhash.a
-- Installing: /usr/local/lib/liblz4.a
-- Installing: /usr/local/lib/libzstdstatic.a
-- Installing: /usr/local/lib/libabsl_int128.a

[CLAassistant]

All committers have signed the CLA.

[Enmk]

Closing to re-open and re-trigger against latest master