Add .idea/artifacts to .gitignore and delete already committed files from there, KTI-1337

.gitignore

@@ -26,11 +26,10 @@ build/
 !**/test/**/build
 *.iml
 !**/testData/**/*.iml
+.idea/artifacts
 .idea/remote-targets.xml
 .idea/libraries/Gradle*.xml
 .idea/libraries/Maven*.xml
-.idea/artifacts/PILL_*.xml
-.idea/artifacts/KotlinPlugin.xml
 .idea/modules
 .idea/runConfigurations/JPS_*.xml
 .idea/runConfigurations/_JPS_*.xml
@@ -43,26 +42,6 @@ build/
 .idea/compiler.xml
 .idea/inspectionProfiles/profiles_settings.xml
 .idea/.name
-.idea/artifacts/dist_auto_*
-.idea/artifacts/dist.xml
-.idea/artifacts/ideaPlugin.xml
-.idea/artifacts/kotlinc.xml
-.idea/artifacts/kotlin_compiler_jar.xml
-.idea/artifacts/kotlin_plugin_jar.xml
-.idea/artifacts/kotlin_jps_plugin_jar.xml
-.idea/artifacts/kotlin_daemon_client_jar.xml
-.idea/artifacts/kotlin_imports_dumper_compiler_plugin_jar.xml
-.idea/artifacts/kotlin_main_kts_jar.xml
-.idea/artifacts/kotlin_compiler_client_embeddable_jar.xml
-.idea/artifacts/kotlin_reflect_jar.xml
-.idea/artifacts/kotlin_stdlib_js_ir_*
-.idea/artifacts/kotlin_test_js_ir_*
-.idea/artifacts/kotlin_dom_api_compat_*
-.idea/artifacts/kotlin_stdlib_wasm_*
-.idea/artifacts/kotlin_test_wasm_*
-.idea/artifacts/kotlinx_atomicfu_runtime_*
-.idea/artifacts/kotlinx_cli_jvm_*
-.idea/artifacts/plugin_annotations_*.xml
 .idea/jarRepositories.xml
 .idea/csv-plugin.xml
 .idea/libraries-with-intellij-classes.xml