1.15 readme and implemented designs

[Lyndon-Li]

Change readme for 1.15 and move implemented designs

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 59.20%. Comparing base (10260bd) to head (561073d). Report is 4 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #8286 +/- ## ========================================== + Coverage 59.19% 59.20% +0.01% ========================================== Files 367 367 Lines 30842 30838 -4 ========================================== + Hits 18257 18259 +2 + Misses 11124 11119 -5 + Partials 1461 1460 -1 ```

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