feat(database/socket): Rework socket database

[gfieni]

This PR reworks the socket database with a more robust and non-async TCP server.
The received data are now expected to be newline-terminated, as done by the hwpc-sensor. (powerapi-ng/hwpc-sensor#60)

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 48.93617% with 48 lines in your changes missing coverage. Please review.

Project coverage is 67.91%. Comparing base (6cbce02) to head (ce2c777).
Report is 24 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #362      +/-   ##
==========================================
+ Coverage   67.69%   67.91%   +0.21%     
==========================================
  Files          74       73       -1     
  Lines        3102     3051      -51     
==========================================
- Hits         2100     2072      -28     
+ Misses       1002      979      -23     

Files	Coverage Δ
src/powerapi/puller/puller_actor.py	91.30% <ø> (-0.70%)	⬇️
src/powerapi/utils/__init__.py	100.00% <ø> (ø)
src/powerapi/report/hwpc_report.py	90.90% <75.00%> (-1.10%)	⬇️
src/powerapi/puller/handlers.py	33.76% <27.27%> (+5.72%)	⬆️
src/powerapi/database/socket_db.py	55.40% <54.41%> (+9.95%)	⬆️