feat(SPV-737) unify search object & filters and move to models package

[chris-4chain]

Pull Request Checklist

• 📖 I created my PR using provided : CODE_STANDARDS
• 📖 I have read the short Code of Conduct: CODE_OF_CONDUCT
• 🏠 I tested my changes locally.
• ✅ I have provided tests for my changes.
• 📝 I have used conventional commits.
• 📗 I have updated any related documentation.
• 💾 PR was issued based on the Github or Jira issue.

[github-actions]

Manual Tests

💚 Manual testing by @pawellewandowski98 resulted in success.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 101 lines in your changes are missing coverage. Please review.

Project coverage is 49.19%. Comparing base (cf3d33a) to head (185d2e9).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #603      +/-   ##
==========================================
- Coverage   49.33%   49.19%   -0.15%     
==========================================
  Files         255      258       +3     
  Lines       12018    12051      +33     
==========================================
- Hits         5929     5928       -1     
- Misses       5505     5530      +25     
- Partials      584      593       +9     

Flag	Coverage Δ
unittests	49.19% <0.00%> (-0.15%)	⬇️

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

Files	Coverage Δ
actions/contacts/models.go	0.00% <ø> (ø)
docs/docs.go	0.00% <ø> (ø)
engine/model_contact.go	64.66% <ø> (-0.24%)	⬇️
actions/common/search_methods.go	0.00% <0.00%> (ø)
actions/access_keys/count.go	0.00% <0.00%> (ø)
actions/destinations/count.go	0.00% <0.00%> (ø)
actions/transactions/count.go	0.00% <0.00%> (ø)
actions/utxos/count.go	0.00% <0.00%> (ø)
models/filter/contact_filter.go	0.00% <0.00%> (ø)
models/filter/destination_filter.go	75.00% <0.00%> (-25.00%)	⬇️
... and 22 more

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update cf3d33a...185d2e9. Read the comment docs.

[chris-4chain]

We've faced an unexpected problem with mAPI during tests. Most probably, some test(s) depend on external mAPI provider which was down when GH ran tests.

I'll re-run tests later and check if the problem still exists.
I decided not to fix this issue because we're removing the mAPI support anyway.