Syn Updates

[jlucas9]

Short list of SYN issues updates:

• Change to use https in the top level .gitmodules and underlying submodules
• Use a mirror of the latest synopsis submodule instead of the old version currently in play
  • Update history to be cleaner as possible simply creating a nos3-main branch with the latest working stuff off the old synopsis main we used
• Occasionally the build will fail with a CONFIGURE_FILE Problem configuring file error. I think this is due to the FetchContent stuff in the CMake it's grabbing, but haven't completely nailed it down. May need to simply build it as another submodule instead of using FetchContent if it keeps acting up.

[jlucas9]

This issue persists even after the transition to 64-bit builds in the latest dev branch

[jlucas9]

Per the suggestions on https://json.nlohmann.me/integration/cmake/#external, I added https://github.com/ArthurSonzogni/nlohmann_json_cmake_fetchcontent/tree/v3.11.2 as a submodule. Seems to fix the fetch_content issues and enable offline builds again.

[jlucas9]

Merged into dev!