Write auto generated input file to tmp

[YigitElma]

Resolves #2139

InputReader.parse_inputs method now uses an in-memory buffer if it has to convert a vmec to a desc input, resulting in no files being written.

[github-actions]

Memory benchmark result

|               Test Name                |      %Δ      |    Master (MB)     |      PR (MB)       |    Δ (MB)    |    Time PR (s)     |  Time Master (s)   |
| -------------------------------------- | ------------ | ------------------ | ------------------ | ------------ | ------------------ | ------------------ |
  test_objective_jac_w7x                 |   -1.60 %    |     3.917e+03      |     3.854e+03      |    -62.84    |       30.43        |       28.42        |
  test_proximal_jac_w7x_with_eq_update   |    0.00 %    |     6.568e+03      |     6.568e+03      |     0.15     |       148.52       |       148.30       |
  test_proximal_freeb_jac                |   -0.29 %    |     1.334e+04      |     1.330e+04      |    -39.05    |       79.20        |       76.89        |
  test_proximal_freeb_jac_blocked        |    0.10 %    |     7.707e+03      |     7.715e+03      |     7.55     |       67.06        |       68.18        |
  test_proximal_freeb_jac_batched        |   -0.08 %    |     7.621e+03      |     7.614e+03      |    -6.28     |       66.76        |       66.66        |
  test_proximal_jac_ripple               |   -0.46 %    |     3.532e+03      |     3.515e+03      |    -16.42    |       52.63        |       52.52        |
  test_proximal_jac_ripple_bounce1d      |   -0.34 %    |     3.749e+03      |     3.736e+03      |    -12.62    |       66.58        |       66.00        |
  test_eq_solve                          |    0.75 %    |     1.919e+03      |     1.933e+03      |    14.34     |       56.64        |       56.36        |

For the memory plots, go to the summary of Memory Benchmarks workflow and download the artifact.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.32%. Comparing base (24aa7b9) to head (3c1ed9e).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2148   +/-   ##
=======================================
  Coverage   94.32%   94.32%           
=======================================
  Files         101      101           
  Lines       28866    28870    +4     
=======================================
+ Hits        27228    27233    +5     
+ Misses       1638     1637    -1     

Files with missing lines	Coverage Δ
desc/input_reader.py	92.39% <100.00%> (+0.27%)	⬆️

... and 4 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[mishapadidar]

When does the delete operation occur on tmpdir? Does it do so automatically when the function ends?
Another option is to use with, i.e.

with tempfile.TemporaryDirectory() as tmpdir:
    path = os.path.join(tmpdir, basename = os.path.basename(self.input_path) + "_desc")

though it could be essentially the same.

[YigitElma]

I think it should be cleared after the python process is terminated or the session on the cluster is closed or the system is rebooted on personal laptop, not immediately after the function call. These are the options listed on the web for "when the tmp is cleared?".

[mishapadidar]

When I ran the test, the temp directory still existed after the code ran.

[YigitElma]

Add a flag for tmp file option

[YigitElma]

Try to pass a file-like object

[dpanici]

Try to pass a file-like object

Did we want to try this?

[YigitElma]

Did we want to try this?

In a previous dev meeting, we said it doesn't worth the effort.

[dpanici]

Did we want to try this?

In a previous dev meeting, we said it doesn't worth the effort.

I was bored and did this. If we decide we don't like it we can revert but was surprisingly easy and clean.