fix(intellij): add missing language method in RobotCodeCodeStyleSettingsProvider

fixes #548

Author: d-biehl

intellij-client/src/main/kotlin/dev/robotcode/robotcode4ij/configuration/RobotCodeCodeStyleSettingsProvider.kt

@@ -3,6 +3,7 @@ package dev.robotcode.robotcode4ij.configuration
 import com.intellij.application.options.CodeStyleAbstractConfigurable
 import com.intellij.application.options.CodeStyleAbstractPanel
 import com.intellij.application.options.TabbedLanguageCodeStylePanel
+import com.intellij.lang.Language
 import com.intellij.psi.codeStyle.CodeStyleConfigurable
 import com.intellij.psi.codeStyle.CodeStyleSettings
 import com.intellij.psi.codeStyle.CodeStyleSettingsProvider
@@ -33,4 +34,8 @@ class RobotCodeCodeStyleSettingsProvider : CodeStyleSettingsProvider() {
             addIndentOptionsTab(settings)
         }
     }
+    
+    override fun getLanguage(): Language {
+        return RobotFrameworkLanguage
+    }
 }