Introduce ApiVersion.KOTLIN_1_5

Author: demiurg906

compiler/util/src/org/jetbrains/kotlin/config/ApiVersion.kt

@@ -55,6 +55,9 @@ class ApiVersion private constructor(
         @JvmField
         val KOTLIN_1_4 = createByLanguageVersion(LanguageVersion.KOTLIN_1_4)
 
+        @JvmField
+        val KOTLIN_1_5 = createByLanguageVersion(LanguageVersion.KOTLIN_1_5)
+
         @JvmField
         val LATEST: ApiVersion = createByLanguageVersion(LanguageVersion.values().last())