Add Kuin (#1300)

* Add Kuin

* Update Kuin.kn

* Add files via upload

Co-authored-by: MrBrain295 <66077254+MrBrain295@users.noreply.github.com>

k/Kuin.kn

@@ -0,0 +1,3 @@
+func main()
+  do cui@print("Hello World\n")
+end func

readme.md

@@ -8,7 +8,7 @@ Thanks to everyone who continues to contribute; new languages are created every
 Make sure to see [contributing.md](/contributing.md) for instructions on contributing to the project!
 
 <!--Languages start-->
-## Languages (900 total)
+## Languages (901 total)
 
 * [!](%23/%21)
 * [!@#$%^&*()_+](%23/%21%40%23%24%25%5E%26%E2%88%97%28%29_%2B)
@@ -511,6 +511,7 @@ Make sure to see [contributing.md](/contributing.md) for instructions on contrib
 * [Kotlin Script](k/Kotlin%20Script.kts)
 * [Kotlin](k/Kotlin.kt)
 * [KSH](k/KSH.ksh)
+* [Kuin](k/Kuin.kn)
 * [Kumir](k/Kumir.kum)
 * [Kv](k/Kv.kv)
 * [Labyrinth](l/Labyrinth.labyrinth)