Switch from storage_type to interface_type

[valeriupredoi]

Description

Contributes towards #307

Before you get started

• ☝ Create an issue to discuss what you are going to do

Checklist

• This pull request has a descriptive title and labels
• This pull request has a minimal description (most was discussed in the issue, but a two-liner description is still desirable)
• Unit tests have been added (if codecov test fails)
• Any changed dependencies have been added or removed correctly (if need be)
• If you are working on the documentation, please ensure the current build passes
• All tests pass

[codecov]

Codecov Report

❌ Patch coverage is 94.73684% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 93.40%. Comparing base (f213d66) to head (57195a0).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
activestorage/active.py	94.73%	1 Missing ⚠️

❌ Your patch status has failed because the patch coverage (94.73%) is below the target coverage (100.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #308      +/-   ##
==========================================
+ Coverage   93.10%   93.40%   +0.29%     
==========================================
  Files           7        7              
  Lines         667      667              
==========================================
+ Hits          621      623       +2     
+ Misses         46       44       -2     

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