Merge pull request 'Added SIMD.' (#178) from readme into main

Reviewed-on: https://codeberg.org/ziglings/exercises/pulls/178

README.md

@@ -232,6 +232,7 @@ Zig Core Language
 * [X] Working with C
 * [X] Threading
 * [x] Labeled switch
+* [x] Vector operations (SIMD)
 
 Zig Standard Library