[RFC]: Add LAPACK routines for solving systems of linear equations (tracking issue)

### Description

This RFC serves as a tracking issue for adding LAPACK routines for solving systems of linear equations.

### Packages

- [x] disnan
- [ ] dgbtf2
- [ ] dgbtrs
- [x] dgeequ
- [x] dgeequb
- [ ] dgerfs
- [ ] dgesv
- [x] dgetf2
- [ ] dgetrf
- [ ] dgetrs
- [ ] dgtrfs
- [x] dgtsv
- [ ] dgttrs
- [ ] dlabad
- [x] dlagtf
- [x] dlagtm
- [x] dlagts
- [x] dlaisnan
- [ ] dlaln2
- [x] dlangt
- [x] dlanhs
- [x] dlansb
- [x] dlansp
- [x] dlanst
- [x] dlansy
- [ ] dlantr
- [x] dlapmr
- [x] dlaqsp
- [x] dlarf
- [x] dlarnv
- [x] dlaruv
- [ ] dlatbs
- [ ] dlatps
- [ ] dptrfs
- [ ] dpttrs
- [ ] dsprfs
- [ ] dspsv
- [x] dsptrf
- [ ] dsptrs
- [ ] dtbtrs
- [ ] dtptrs
- [ ] dtrtrs

### Related Issues

None.

### Questions

No.

### Other

No.

### Checklist

- [x] I have read and understood the [Code of Conduct](https://github.com/stdlib-js/stdlib/blob/develop/CODE_OF_CONDUCT.md).
- [x] Searched for existing issues and pull requests.
- [x] The issue name begins with `RFC:`.

Use this issue as a tracking list for the LAPACK routines, beginning with the unchecked packages such as dgesv, dgetrf, dgetrs, and dtrtrs. Review the completed and remaining checklist entries, then identify the relevant implementation and test locations in the stdlib repository before defining the scope. Done means the selected routines are implemented and their checklist entries can be marked complete.

Vom Indexierungsmodell aus dem Issue-Text verfasst.