[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_modern.out

@@ -0,0 +1,7 @@
+warning: ATTENTION!
+ This build uses experimental K2 compiler:
+  -Xuse-k2
+error: there are some plugins incompatible with K2 compiler:
+  org.jetbrains.kotlin.android.synthetic.AndroidComponentRegistrar
+Please remove -Xuse-k2
+COMPILATION_ERROR