feat: implement arithmetic on numeric generics #4958
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…ith operation, move constant/named-generic into sub-struct, add unit and test_programs tests
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# Description ## Problem\* Resolves #4953 ## Summary\* Adds an elaborator - a concept borrowed from dependently typed languages - which performs name resolution and type checking simultaneously. The new elaborator is currently disabled (inaccessible from user code) since it is not hooked up to the `dc_crate` module. This PR is extremely large (sorry!) but is 99% a pseudo copy-paste of existing code from the name resolver and type checker, only slightly adapted to be able to work in tandem. Unfortunately, this also means that we'll need to duplicate any changes made to the name resolver & type checker in the elaborator as well until we can remove the old name resolution and type checking passes. For example, #4958 will need to be integrated into the elaborator as well. ## Additional Context After this PR the plan is to 1. Connect the elaborator to `dc_crate`, enabling it with a command-line option. 2. Insert logic for the comptime scanning pass in the elaborator as well. 3. Test the elaborator against all existing tests. 4. Once it passes, we can use the elaborator by default and delete the name resolution, type checking, and comptime scanning passes. ## Documentation\* Check one: - [x] No documentation needed. - [ ] Documentation included in this PR. - [ ] **[For Experimental Features]** Documentation to be submitted in a separate PR. # PR Checklist\* - [x] I have tested the changes locally. - [ ] I have formatted the changes with [Prettier](https://prettier.io/) and/or `cargo fmt` on default settings.
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Description
Problem*
Resolves #4784
Summary*
Additional Context
Documentation*
Check one:
PR Checklist*
cargo fmton default settings.