Add DeepWiki badge to README

[jonathanbossenger]

Added DeepWiki badge the README. This will allow Deepwiki to auto refresh weekly at https://deepwiki.com/WordPress/abilities-api/

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

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Co-authored-by: jonathanbossenger <psykro@git.wordpress.org>
Co-authored-by: justlevine <justlevine@git.wordpress.org>

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 22.52%. Comparing base (5f64910) to head (3e7cdac).

Additional details and impacted files

@@              Coverage Diff              @@
##              trunk     #159       +/-   ##
=============================================
- Coverage     80.46%   22.52%   -57.94%     
  Complexity      178      178               
=============================================
  Files            20       20               
  Lines          1474     1474               
  Branches        120      119        -1     
=============================================
- Hits           1186      332      -854     
- Misses          288     1142      +854     

Flag	Coverage Δ
javascript	94.61% <ø> (ø)
unit	1.40% <ø> (-74.92%)	⬇️

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[justlevine]

@jonathanbossenger as this repo is no longer the up-to-date source of truth, are we sure we even want it in deepwiki?

[jonathanbossenger]

as this repo is no longer the up-to-date source of truth, are we sure we even want it in deepwiki?

It's already in DeepWiki; someone added it sometime last year. I find DeepWiki very useful when learning a new codebase, as it helps me find answers to questions about how to implement things.