The create_test.sh script for generating new catch2 tests no longer works as expected in some cases.

Running the script without specifying a module results in a "directory not found", since the directory specified in the script (tests) does not match the actual default test directory (misc_tests). 

The INCLUDE_SESSION_DIR also needs to be updated in order for newly generated test files to link properly.

This script should be updated to match the current directory structure, including the above suggested changes, along with any other inconsistencies.

The script should work as documented according to the existing comments and catch2 README.md.