Updated SpyGlass backend to support features in Synopsys Spyglass v2023.12

[amal-araweelo]

This pull request introduces enhancements to the Spyglass backend in the Edalize project. The key changes include:

Support generalized SystemVerilog source files:

• Updated the project file generation to support SystemVerilog without version limits (previously just SV09)

Extending support of constraint file types

• Added support SpyGlass Design Constraint files (.sgdc)

Support for set_goal_option

• Implemented functionality for set_goal_options

This resolves the issue I opened (#444)

[amal-araweelo]

@olofk is Edalize no longer in development, or?

[olofk]

The patch looks mostly fine from a quick look but there are some issues, like the hardcoded version string. The test cases also aren't updated, so the tests are failing now.

I also need to inform that this backend uses the old Tool API instead of the new Flow API, and I'm a bit hesitant towards making updates to the old backends. I would much prefer if it was instead rewritten to use the new Flow API.

[amal-araweelo]

@olofk wouldn't I still have to change the spyglass tool API in order to create a flow with the extended functionality? Or what do you suggest?