Forward JAR options without changing order to classpath

[tomuben]

Background

The %jar option for Java UDF references external JAR files, see https://docs.exasol.com/db/latest/database_concepts/udf_scripts/adding_new_packages_script_languages.htm#AddingJavafilesjartoaJavaUDF

File paths under Linux support white spaces. However, we don't want to break compatiblity with the old parser syntax which always trimmed the JAR file path.

Also, the current implementation collects the JAR options in a std::set, in order to avoid duplicates. However, the classpath entries are then in an alphabetical order. The user looses control about the order of the classpath entries.

Acceptance Criteria

1. Change the convert.cc implementation which process the JAR option and check for escape sequences "\ " and "\t".
2. Trim white spaces which are not escaped
3. Collect jar paths in a list and not in a set.
4. Adjust JavaContainer to forward classpaths in user given order