Updating directory structure for DSR report

[galvana]

Closes #3821

Description Of Changes

Updated DSR package structure, the root directory now contains a more user-friendly welcome.html and all of the data necessary to display the report has been aggregated under the data directory.

Code Changes

• Updated file references within the report builder and report templates to reflect the new structure

Steps to Confirm

• Run nox -s "fides_env(test)"
• Navigate to the Privacy Center and submit an access request for jane@example.com
• Navigate to the Admin UI and approve the access request
• The new DSR package should be available in the fides_uploads directory within your local Fides repo

Pre-Merge Checklist

• All CI Pipelines Succeeded
• Documentation:
  • documentation complete, PR opened in fidesdocs
  • documentation issue created in fidesdocs
• Issue Requirements are Met
• Relevant Follow-Up Issues Created
• Update CHANGELOG.md
• For API changes, the Postman collection has been updated

[cypress]

Passing run #3273 ↗︎

0	4	0	0	0
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Details:

Merge 0e5568d into 639e267...
Project: fides	Commit: 29eae76d8f ℹ️
Status: Passed	Duration: 00:45 💡
Started: Jul 21, 2023 11:18 PM	Ended: Jul 21, 2023 11:18 PM

_{This comment has been generated by cypress-bot as a result of this project's GitHub integration settings.}

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +21.86 🎉

Comparison is base (639e267) 65.31% compared to head (0e5568d) 87.18%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #3848       +/-   ##
===========================================
+ Coverage   65.31%   87.18%   +21.86%     
===========================================
  Files         317      317               
  Lines       19350    19350               
  Branches     2485     2485               
===========================================
+ Hits        12639    16870     +4231     
+ Misses       6260     2049     -4211     
+ Partials      451      431       -20     

Impacted Files	Coverage Δ
.../privacy_request/dsr_package/dsr_report_builder.py	94.93% <100.00%> (+63.29%)	⬆️

... and 148 files with indirect coverage changes

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