[CLI] Introduce new compiler arguments for registering compiler plugins

With new syntax each plugin should be registered in separate argument with syntax
`-Xcompiler-plugin=classpath1,classpath2[=argument1=value1,argument2=value2]`

compiler/testData/cli/jvm/plugins/pluginWithK2Error_legacy.args

@@ -0,0 +1,10 @@
+-d
+$TEMP_DIR$
+-Xplugin=dist/kotlinc/lib/android-extensions-compiler.jar
+-P
+plugin\:org.jetbrains.kotlin.android\:package=com.myapp
+-P
+plugin\:org.jetbrains.kotlin.android\:variant=main;$TESTDATA_DIR$/../androidPlugin/res
+$TESTDATA_DIR$/pluginSimple.kt
+$TESTDATA_DIR$/../androidPlugin
+-Xuse-k2