Configure/Makefile: install the fips provider if it was configured

Configure/Makefile: install the fips provider if it was configured

To follow the principle "what you configure is what you install",
the `make install` target now includes the installation of the
fips provider (`make install_fips`) if (and only if) OpenSSL was
configured with fips support (`enable-fips`).

The `make install_fips` target exists as well and can be used
to install just the fips provider. It requires `enable-fips`
and issues an error message if `no-fips` was configured.

The anologue holds for the 'uninstall_fips' target.

Fixes #13693

Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13684)