Refactoring of the tiny_tribler_service.py

[drew2a]

The TinyTriblerService was introduced in 2020 and was aimed to simplify developers' work when they have to do experiments.

2 years later, we have a history of the TinyTriblerService usage that makes it possible to simplify work with the TinyTriblerService even more. Thanks for #7105 it could be done in a safe manner.

So the most minimalistic Tribler's run now is:

from pathlib import Path

from tribler.core.components.ipv8.ipv8_component import Ipv8Component
from tribler.core.components.key.key_component import KeyComponent
from tribler.core.utilities.tiny_tribler_service import TinyTriblerService

tribler = TinyTriblerService(
    working_dir=Path('.Tribler'),
    components=[
        Ipv8Component(),
        KeyComponent()
    ]
)

tribler.run()