DEP 221 cont'd: rename files + update path references

[NatSquared]

Issue #: 🎟️ DEP-221

Description of changes:
This PR finishes renaming the following paths:

• met-api -> api
  • met-api/src/met_api -> api/src/api
• met-cron -> cron
  • met-cron/src/met_cron -> cron/src/cron
• met-web -> web
• met-etl -> etl
  and updates all references to them in tracked code.
• Chore Update references to "MET" to refer to "DEP" or "engagement", or to be generic
  • Renamed all remaining instances of "MET" in the codebase to "DEP" to reflect the rebranding of the project to the Digital Engagement Platform (DEP).
  • This includes renaming files, variables, functions, and any other references to "MET" across the entire codebase.
  • Updated documentation and comments to reflect the new naming convention.

User Guide update ticket (if applicable):

• • Yes, a user guide update ticket has been created. (Link to ticket)
• • No, a user guide update ticket is not required.

Common component changes:

• • Yes, I have updated CONTRIBUTING.md and the docblocks to document any changes to the common components.
• • No, there are no changes to the common components.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.26%. Comparing base (0d909db) to head (580ac8d).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2803       +/-   ##
===========================================
+ Coverage   75.30%   86.26%   +10.96%     
===========================================
  Files         526      244      -282     
  Lines       20134    11091     -9043     
  Branches     1474        0     -1474     
===========================================
- Hits        15161     9568     -5593     
+ Misses       4967     1523     -3444     
+ Partials        6        0        -6     

Flag	Coverage Δ
api	86.26% <100.00%> (?)
metapi	?
metweb	?

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

Files with missing lines	Coverage Δ
api/src/api/__init__.py	91.96% <100.00%> (ø)
api/src/api/auth.py	100.00% <100.00%> (ø)
api/src/api/config.py	97.29% <100.00%> (ø)
api/src/api/constants/comment_status.py	100.00% <ø> (ø)
api/src/api/constants/email_verification.py	100.00% <ø> (ø)
api/src/api/constants/engagement_status.py	100.00% <ø> (ø)
api/src/api/constants/event_types.py	100.00% <ø> (ø)
api/src/api/constants/export_comments.py	100.00% <ø> (ø)
api/src/api/constants/feedback.py	100.00% <ø> (ø)
api/src/api/constants/membership_type.py	100.00% <ø> (ø)
... and 171 more

... and 430 files with indirect coverage changes

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[sonarqubecloud]

Quality Gate failed

Failed conditions
E Reliability Rating on New Code (required ≥ A)
E Security Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

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[jareth-whitney]

Looks like a straight-ahead string replacement from met_api to api. Just make sure that we either fix or ignore the SQC suggestions.