The gtest can safely go on in case this test case fails.

Adapt all concerned files:
- Code
- Tests
- Tutorials
- CMakeLists.txt
- Selection files

this includes:
- Data Sources
- Utilities
- Tests

Things are not jitted when `Jit` is invoked, the method simply
appends to the list of things to jit.

add <mutex> header for linux platforms.

since we need to push and pop to/from the stack from different threads
and we are not testing concurrent access.
This is needed because the system is not able to handle two asserts
which happen almost simultaneously in two different threads.

Add unit tests for TDF interface, utitlities and nodes.