Report electronic energy in an output file

[JintaoWu98]

1. Add the "report_e_elect" as the argument/attribute, and method "save_e_elect" to decide whether electronic energy will be in the output or not, after the single-point energy calculation.
2. A test case is also added for this purpose to check if e_elect_summary.yml is created and have the electronic energy info

[codecov[bot]]

Codecov Report

Merging #708 (4fcf5c6) into main (067e76c) will increase coverage by 0.05%. The diff coverage is 88.88%.

@@            Coverage Diff             @@
##             main     #708      +/-   ##
==========================================
+ Coverage   73.47%   73.53%   +0.05%     
==========================================
  Files          99       99              
  Lines       26576    26602      +26     
  Branches     5539     5542       +3     
==========================================
+ Hits        19528    19561      +33     
+ Misses       5682     5672      -10     
- Partials     1366     1369       +3     

Flag	Coverage Δ
unittests	73.53% <88.88%> (+0.05%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
arc/scheduler_test.py	100.00% <100.00%> (ø)
arc/scheduler.py	23.81% <90.00%> (+0.65%)	:arrow_up:
arc/main.py	50.81% <33.33%> (-0.08%)	:arrow_down:

... and 2 files with indirect coverage changes

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more