doc: add performance initiative

Author: anonrig

doc/contributing/strategic-initiatives.md

@@ -15,6 +15,7 @@ agenda to ensure they are active and have the support they need.
 | V8 Currency            | [Michaël Zasso][targos]     |                                               |
 | Next-10                | [Michael Dawson][mhdawson]  | <https://github.com/nodejs/next-10>           |
 | Single executable apps | [Darshan Sen][RaisinTen]    | <https://github.com/nodejs/node/issues/43432> |
+| Performance            | [Yagiz Nizipli][anonrig]    | <https://github.com/nodejs/performance>       |
 
 <details>
 <summary>List of completed initiatives</summary>
@@ -44,3 +45,4 @@ agenda to ensure they are active and have the support they need.
 [legendecas]: https://github.com/legendecas
 [mhdawson]: https://github.com/mhdawson
 [targos]: https://github.com/targos
+[anonrig]: https://github.com/anonrig