Consider target-link-libraries as you go

[pelesh]

Consider adding target link library instructions in CMake files in Re::Solve subdirectories. Currently, target link library instructions are all in CMake file in the resolve directory. Moving these commands to subdirectories would make resolve dir CMake less cluttered and more intuitive.

This was suggested by @cameronrutherford in #140 (see below).

install(FILES ${Options_HEADER_INSTALL} DESTINATION include/resolve/utilities/options)

target_link_libraries(...)

Per my previous comments, we would just be moving where the target_link_libraries call actually happens. Again, purely a cosmetic suggestion

Originally posted by @cameronrutherford in #140 (comment)

[pelesh]

CC @cameronrutherford @kswirydo

[pelesh]

CC @superwhiskers