Enabling qelectron tests and making qelectron opt-in only

[kessler-frost]

• I have added the tests to cover my changes.
• I have updated the documentation and CHANGELOG accordingly.
• I have read the CONTRIBUTING document.

This PR makes the following changes:

1. Adds the qelectron tests to the tests github workflow
2. Makes qelectrons a feature that is opt-in only using pip install covalent[quantum] since it might be blocking some users from upgrading certain versions of dependencies even if they do not require their parent deps in their workflows
3. Suppresses the harmless sqlalchemy warning that shows up on a fresh covalent start

Resolves #1877
Resolves #1912
Resolves #1907

[codecov]

Codecov Report

Attention: 23 lines in your changes are missing coverage. Please review.

Comparison is base (2f46195) 84.53% compared to head (8bc9870) 84.52%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1916      +/-   ##
===========================================
- Coverage    84.53%   84.52%   -0.01%     
===========================================
  Files          295      295              
  Lines        14471    14488      +17     
  Branches       195      195              
===========================================
+ Hits         12233    12246      +13     
- Misses        2104     2108       +4     
  Partials       134      134              

Flag	Coverage Δ
Dispatcher	92.53% <100.00%> (+<0.01%)	⬆️
Functional_Tests	51.37% <60.00%> (+0.01%)	⬆️
SDK	79.49% <64.91%> (+0.01%)	⬆️
UI_Backend	84.53% <66.66%> (-0.20%)	⬇️
UI_Frontend	73.35% <ø> (ø)

[kessler-frost]

The diff coverage is low because the functions that have been moved to another place didn't already have tests in place.

[kessler-frost]

@Andrew-S-Rosen I think once this PR gets merged, it should unblock you in the sense that we won't have a numpy dependency for covalent. The only thing needed when installing covalent would be to have an environment variable set i.e. COVALENT_DISABLE_QELECTRON=1, and none of the quantum stuff will be installed - thus neither will numpy so you can have whichever numpy version you need.

Simple install command to install the pre-release without numpy dependency once this PR gets merged:

COVALENT_DISABLE_QELECTRON=1 pip install --pre covalent

[Andrew-S-Rosen]

Brilliant, thank you!

[kessler-frost]

To make it further easier, now qelectrons (and its dependencies) are an opt-in only feature (instead of opt-out). In case its installation is required by someone, they will be able to install it using pip install covalent[quantum]. By default none of the quantum dependencies will be installed.

[cjao]

Looks good @kessler-frost