CLI: improve error message if libraries are not found in Kotlin home

Also support the '-kotlin-home' argument in kotlinc-js

 #KT-18859 Fixed

compiler/testData/cli/js/jsHelp.out

@@ -18,6 +18,7 @@ where possible options include:
   -output-postfix <path>     Path to file which will be added to the end of output file
   -language-version <version> Provide source compatibility with specified language version
   -api-version <version>     Allow to use declarations only from the specified version of bundled libraries
+  -kotlin-home <path>        Path to Kotlin compiler home directory, used for runtime libraries discovery
   -P plugin:<pluginId>:<optionName>=<value>
                              Pass an option to a plugin
   -help (-h)                 Print a synopsis of standard options
@@ -25,4 +26,4 @@ where possible options include:
   -version                   Display compiler version
   -verbose                   Enable verbose logging output
   -nowarn                    Generate no warnings
-OK
+OK

compiler/testData/cli/js/kotlinHomeWithoutStdlib.args

@@ -0,0 +1,5 @@
+$TESTDATA_DIR$/simple2js.kt
+-kotlin-home
+$TESTDATA_DIR$
+-output
+$TEMP_DIR$/out.js

compiler/testData/cli/js/kotlinHomeWithoutStdlib.out

@@ -0,0 +1,2 @@
+warning: unable to find kotlin-stdlib-js.jar in the Kotlin home directory. Pass either '-no-stdlib' to prevent adding it to the classpath, or the correct '-kotlin-home'
+OK

compiler/testData/cli/js/nonExistingKotlinHome.args

@@ -0,0 +1,5 @@
+$TESTDATA_DIR$/simple2js.kt
+-kotlin-home
+non-existing-path
+-output
+$TEMP_DIR$/out.js

compiler/testData/cli/js/nonExistingKotlinHome.out

@@ -0,0 +1,2 @@
+error: Kotlin home does not exist or is not a directory: non-existing-path
+COMPILATION_ERROR