Add SVN config sample files

Adds svn config files for the teacher and student. Support for SVN issue in the backend

svn-student-dir.txt

+dta::https://svn.riouxsvn.com/cota-submission::mamunozgil::riouxsvn::/

svn-teacher-dta-test-.txt

+dta::https://svn.riouxsvn.com/cota-testcourse::mamunozgil::riouxsvn::/topic02/exercise04::cota-runner-jdk21-junit5:latest