Fix code coverage for LQ/LK CPU Python

[josephleekl]

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---

Context:
Currently Lightning Qubit and Lightning Kokkos (CPU) Python coverage is not collected, leading to low coverage in LQ and LK as seen here (Previously LK contains coverage from GPU tests, but not CPU tests).

Description of the Change:
In the lkcpu and lqcpu python CI:

• Delete the source files from repo, so that the source files from wheel can be tracked by coverage
• During the step to combine the coverage files, we add the equivalent source files to .coveragerc so they can be combined properly

Benefits:
We will have coverage for LQ/LK python again, as seen here.

Possible Drawbacks:

Related GitHub Issues:

[sc-83296]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.60%. Comparing base (e727c46) to head (1ec9e85).
Report is 1 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (e727c46) and HEAD (1ec9e85). Click for more details.

HEAD has 29 uploads less than BASE

Flag	BASE (e727c46)	HEAD (1ec9e85)
	35	6

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1053       +/-   ##
===========================================
- Coverage   97.86%   62.60%   -35.26%     
===========================================
  Files         233       29      -204     
  Lines       39537     2607    -36930     
===========================================
- Hits        38691     1632    -37059     
- Misses        846      975      +129     

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[AmintorDusko]

@josephleekl, many CIs are failing at the moment. Let me know when fixed. 🙂

[josephleekl]

@josephleekl, many CIs are failing at the moment. Let me know when fixed. 🙂

Thanks @AmintorDusko , the failed CIs are all related to ARM Wheel builds, which is a separate unrelated issue. We're seeing those on master branch too (e.g.); @maliasadi mentioned he'll investigate that issue later on.

update: the issue is fixed with this PR

[josephleekl]

@josephleekl, many CIs are failing at the moment. Let me know when fixed. 🙂

Thanks @AmintorDusko , the failed CIs are all related to ARM Wheel builds, which is a separate unrelated issue. We're seeing those on master branch too (e.g.); @maliasadi mentioned he'll investigate that issue later on.
update: the issue is fixed with this PR

Makes sense. Let me know when CIs are green here (after the other PR etc.).

CIs are green again @AmintorDusko :)

[AmintorDusko]

Thank you, @josephleekl! Nice increase in Coverage! Cheers!

[maliasadi]

Thanks @josephleekl! Nice work 🥳