Create cronjob for reporting

[i-oden]

Before submitting the PR, please go through the sections below and fill in what you can. If there are any items that are irrelevant for the current PR, remove the row. If a relevant option is missing, please add it as an item and add a PR comment informing that the new option should be included into this template.

All relevant items should be ticked before the PR is merged

Description

New cronjob for getting the number of users and units the first of each month. This is for reporting purposes and allows us to keep track of "progress".

• Add a summary of the changes and the related issue
• Add motivation and context regarding why the change is needed
• Fixes DDS-1432

Type of change

• New feature (non-breaking)

Checklist:

General

• Changelog: New row added. Not needed when PR includes only tests.
• Code change
  • Self-review of code done
  • Comments added, particularly in hard-to-understand areas

Repository / Releases

• Rebase / update of branch done

Checks

• Formatting: Black & Prettier checks pass
• CodeQL passes
• Tests
  • I have added tests for the new code
  • The tests pass
• Trivy / Snyk:
  • There are no new security alerts

[codecov]

Codecov Report

Merging #1335 (e1ed75e) into dev (b33895c) will increase coverage by 0.11%.
The diff coverage is 100.00%.

❗ Current head e1ed75e differs from pull request most recent head 54e103f. Consider uploading reports for the commit 54e103f to get more accurate results

@@            Coverage Diff             @@
##              dev    #1335      +/-   ##
==========================================
+ Coverage   88.09%   88.21%   +0.11%     
==========================================
  Files          29       29              
  Lines        4039     4080      +41     
==========================================
+ Hits         3558     3599      +41     
  Misses        481      481              

Impacted Files	Coverage Δ
dds_web/config.py	100.00% <100.00%> (ø)
dds_web/scheduled_tasks.py	77.54% <100.00%> (+6.11%)	⬆️
dds_web/security/tokens.py	100.00% <0.00%> (ø)

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[i-oden]

@valyo Tests added so this is completely ready for review now

[valyo]

apart from the two comments everything looks and works fine

[i-oden]

@valyo Could you have a look again? I changed the bit with the total number of users.

[valyo]

just tested again and all seems fine