This is an alternative method for running the tests that some users may prefer: pytest is and will remain fully supported.
To use this, one creates a .bazelrc by running the existing `build.py` script, and then one can run the tests by running:
```
bazel test -c opt //tests/...
```
Issue #7323
PiperOrigin-RevId: 458551208
* Adds lax.{cholesky,triangular_solve,qr}. Adds a JVP for Cholesky.
* Adds a transpose rule for add_p, needed by the Cholesky JVP.
* Adds np.linalg.{cholesky,qr,dot,matmul,trace}.
* Adds scipy.linalg.{cholesky,qr,solve_triangular,tril,triu}.
Pair programmed with mattjj.
