[SAOC 2024] Improve D Error Messages - Weekly Update #10

[Royal Simpson Pinto]

### Summary of Progress (November 18 – November 24)

This week, I focused on enabling `verrors=context` globally, 
manually updating numerous test outputs, and refining the error 
visualization in the DMD compiler to ensure a better user 
experience.

### What I Worked On

#### Key PRs:

- feat(errors): make verrors=context global and update test 
outputs [#17085](https://github.com/dlang/dmd/pull/17085)

     - Implemented global support for `verrors=context`, enhancing 
error visualization with consistent squiggles and carets in error 
messages.

#### Manual Test Updates:

- Fixed 50+ TEST_OUTPUT's manually this week, ensuring 
compatibility with the global implementation of `verrors=context`.
- Currently addressing the remaining outputs, particularly those 
containing regexes that cannot be auto-updated, to ensure all 
test cases properly reflect the new error visualization.

### Learning and Implementation:

- Studied and resolved discrepancies in outputs caused by the 
global `verrors=context` change.
- Ensured all updates align with the intended output format, 
avoiding regressions or inconsistencies in error reporting.

### Next Steps:

- Work on fixing the remaining TEST_OUTPUT's, including 
regex-based outputs, ensuring they have proper squiggles and 
carets.