Update dependency docs

[CyberHoward]

Update the docs to properly explain dependencies without too much fuss.

Added a section on DependencyCreation and moved around some of the content.

Checklist

• [x] CI is green.
• [x] Changelog updated.

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 92.85714% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 77.8%. Comparing base (21e55ad) to head (d012e4c). Report is 146 commits behind head on main.

Additional details and impacted files

Files	Coverage Δ
modules/contracts/apps/dca/src/contract.rs	100.0% <100.0%> (ø)
...act-sdk/src/base/features/abstract_name_service.rs	72.2% <50.0%> (+50.4%)	:arrow_up:

... and 258 files with indirect coverage changes