📌 Maintenance/webserver requirements

[pcrespov]

What do these changes do?

• fixes web/server/requirements : removes packages.* files and old constraints.
• Add extra dependency tools (pipreqs and pipreqtree to assist resolving conflicts and analyzing dependencies)

Related issue/s

How to test

Check that the requirements _base.txt are the libraries that actually get installed in production:

$ make devenv
$ source .venv/bin/activate
$ cd services/web/server

$ make install-prod

$ make pip-freeze

$  diff -i freeze-base.ignore.txt freeze-now.ignore.txt
32c32
< importlib-resources==5.4.0 ; python_version < "3.9"
---
> importlib-resources==5.4.0
50a51,52
> pep517==0.12.0
> pip-tools==6.4.0
62a65,69
> simcore-models-library @ file:///home/crespo/devp/osparc-simcore/packages/models-library
> simcore-postgres-database @ file:///home/crespo/devp/osparc-simcore/packages/postgres-database
> simcore-service-library @ file:///home/crespo/devp/osparc-simcore/packages/service-library
> simcore-service-webserver @ file:///home/crespo/devp/osparc-simcore/services/web/server
> simcore-settings-library @ file:///home/crespo/devp/osparc-simcore/packages/settings-library
66a74
> tomli==1.2.3
76d83
< 

Notice that the differences are tools (i.e. pip-tools etc) and osparc-simcore packages (which are not in _base.py)

Checklist

[codecov]

Codecov Report

Merging #2741 (79273f2) into master (c3f6073) will decrease coverage by 0.0%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           master   #2741     +/-   ##
========================================
- Coverage    78.3%   78.2%   -0.1%     
========================================
  Files         677     677             
  Lines       27011   27011             
  Branches     2617    2617             
========================================
- Hits        21157   21149      -8     
- Misses       5147    5151      +4     
- Partials      707     711      +4     

Flag	Coverage Δ
integrationtests	65.6% <ø> (-0.1%)	⬇️
unittests	74.1% <ø> (-0.1%)	⬇️

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

Impacted Files	Coverage Δ
...rvice-library/src/servicelib/common_aiopg_utils.py	88.2% <0.0%> (-8.9%)	⬇️
..._director_v2/modules/dynamic_sidecar/client_api.py	67.5% <0.0%> (-1.3%)	⬇️
...car/src/simcore_service_dask_sidecar/dask_utils.py	90.7% <0.0%> (-1.1%)	⬇️
...ce_webserver/resource_manager/garbage_collector.py	72.7% <0.0%> (-0.9%)	⬇️
...tor_v2/modules/dynamic_sidecar/scheduler/events.py	92.9% <0.0%> (-0.8%)	⬇️
...ector_v2/modules/dynamic_sidecar/scheduler/task.py	86.4% <0.0%> (+0.5%)	⬆️

[GitHK]

very nice!