feat(#1029): improve server api logging

[frascuchon]

This PR improves the server api logging by using loguru. If loguru package is not installed, the "basic" logging will be used.

In future PRs we can customize or parameterize some aspects of new logging engine.

The logging traces looks like that:

2022-02-14 13:18:01.905 | INFO     | uvicorn.lifespan.on:startup:59 - Application startup complete.
2022-02-14 13:18:01.906 | INFO     | uvicorn.server:_log_started_message:206 - Uvicorn running on http://0.0.0.0:6900 (Press CTRL+C to quit)
2022-02-14 13:18:06.438 | INFO     | uvicorn.protocols.http.httptools_impl:send:432 - 127.0.0.1:57502 - "GET /api/me HTTP/1.1" 200
2022-02-14 13:18:07.386 | INFO     | uvicorn.protocols.http.httptools_impl:send:432 - 127.0.0.1:57502 - "GET /api/datasets/ HTTP/1.1" 200
/usr/local/anaconda3/envs/rubrix/lib/python3.8/site-packages/opensearchpy/connection/base.py:208: OpenSearchWarning: Loading the fielddata on the _id field is deprecated and will be removed in future versions. If you require sorting or aggregating on this field you should also include the id in the body of your documents, and map this field as a keyword field that has [doc_values] enabled
  warnings.warn(message, category=OpenSearchWarning)
2022-02-14 13:18:10.220 | INFO     | uvicorn.protocols.http.httptools_impl:send:432 - 127.0.0.1:57502 - "POST /api/datasets/test_some_sort/TokenClassification%3Asearch?limit=5&from=0 HTTP/1.1" 200
2022-02-14 13:18:10.296 | INFO     | uvicorn.protocols.http.httptools_impl:send:432 - 127.0.0.1:57502 - "POST /api/datasets/test_some_sort/TokenClassification%3Asearch?limit=0&from=0 HTTP/1.1" 200
2022-02-14 13:18:17.091 | INFO     | uvicorn.protocols.http.httptools_impl:send:432 - 127.0.0.1:57503 - "GET /api/datasets/ HTTP/1.1" 200
2022-02-14 13:18:18.958 | INFO     | uvicorn.protocols.http.httptools_impl:send:432 - 127.0.0.1:57503 - "POST /api/datasets/test_multiple_mentions_in_same_record/TokenClassification%3Asearch?limit=5&from=0 HTTP/1.1" 200
2022-02-14 13:18:19.027 | INFO     | uvicorn.protocols.http.httptools_impl:send:432 - 127.0.0.1:57503 - "POST /api/datasets/test_multiple_mentions_in_same_record/TokenClassification%3Asearch?limit=0&from=0 HTTP/1.1" 200

Closes #1029

[codecov]

Codecov Report

Merging #1148 (b71662d) into master (df5fc8a) will decrease coverage by 0.04%.
The diff coverage is 62.06%.

❗ Current head b71662d differs from pull request most recent head 17a501d. Consider uploading reports for the commit 17a501d to get more accurate results

@@            Coverage Diff             @@
##           master    #1148      +/-   ##
==========================================
- Coverage   95.06%   95.02%   -0.05%     
==========================================
  Files         123      122       -1     
  Lines        4846     4827      -19     
==========================================
- Hits         4607     4587      -20     
- Misses        239      240       +1     

Flag	Coverage Δ
pytest	95.02% <62.06%> (-0.05%)	⬇️

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

Impacted Files	Coverage Δ
src/rubrix/server/__main__.py	0.00% <ø> (ø)
src/rubrix/logging.py	63.63% <21.42%> (-31.11%)	⬇️
src/rubrix/server/server.py	85.48% <100.00%> (+4.63%)	⬆️
src/rubrix/server/tasks/search/model.py	95.45% <0.00%> (-0.20%)	⬇️
src/rubrix/server/tasks/commons/metrics/service.py	98.21% <0.00%> (-0.07%)	⬇️
src/rubrix/client/datasets.py	98.19% <0.00%> (-0.02%)	⬇️
src/rubrix/client/models.py	100.00% <0.00%> (ø)
src/rubrix/client/sdk/text2text/models.py	100.00% <0.00%> (ø)
src/rubrix/server/tasks/search/service.py	100.00% <0.00%> (ø)
... and 5 more

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[dcfidalgo]

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