Add Intel tests to devel branch

[EmilyBourne]

Add the configuration files to run tests with an Intel compiler. To this end add an environment variable PYCCEL_DEFAULT_COMPILER which specifies the default compiler.

There are 3 failing tests due to:

• passing NaN as an argument
• OpenMP bug with Intel compiler #1540

Additionally some array tests were modified to use isclose for comparisons instead of np.all_equal these tests all involve divisions and should have been using isclose anyway.

This is related to #542 but does not fully fix the issue as it only adds Intel.

[pyccel-bot]

Hello again! Thank you for this new pull request 🤩.

Here is your checklist. Please tick items off when you have completed them or determined that they are not necessary for this pull request:

• Write a clear PR description
• Add tests to check your code works as expected
• Update documentation if necessary
• Update Changelog
• Ensure any relevant issues are linked
• Ensure new tests are passing

[EmilyBourne]

Intel installation tested here:
https://github.com/EmilyBourne/pyccel/actions/workflows/intel.yml

[pyccel-bot]

Good job ! Your PR is using all the code it added/changed.

[pyccel-bot]

Hey @pyccel/pyccel-dev ! @EmilyBourne has just created this great new pull request! Check it out and let me know what you think!

[yguclu]

Looks good to me!

[yguclu]

/bot run pr_tests

[pyccel-bot]

Good job ! Your PR is using all the code it added/changed.

[pyccel-bot]

Unfortunately your PR is not passing the tests so it is not quite ready for review yet. Let me know when it is fixed with /bot mark as ready.

[pyccel-bot]

I can't seem to find your checklist to confirm that you have completed all necessary tasks. Please request one using /bot checklist.

[EmilyBourne]

Here is your checklist. Please tick items off when you have completed them or determined that they are not necessary for this pull request:

• Write a clear PR description
• Add tests to check your code works as expected
• Update documentation if necessary
• Update Changelog
• Ensure any relevant issues are linked
• Ensure new tests are passing