Add dependencies for application tester to run

[xoriole]

While fixing the application tester jobs on Jenkins, I found that some dependencies need to be installed to run the application tester from the Tribler repo application tester code. This is a subset of Tribler dependencies.

Several dependencies are required because of the application tester code dependence on TriblerConfig class.

Earlier PR #7824 was used to test if application tester-specific dependencies are installed during tests. It was done by adding an extra dependency requests==2.31.0 and using that dependency in the application tester code. The test is successful and the action run for that is available here.

[drew2a]

Looks good to me, except the file-read-backwards dependency seems suspicious as it is used only in Tribler and in Exit Node code (NIT).

Please update the readme.md of the Application Tester and add a section about the necessity of installing prerequisites.

[xoriole]

Looks good to me, except the file-read-backwards dependency seems suspicious as it is used only in Tribler and in Exit Node code (NIT).

Please update the readme.md of the Application Tester and add a section about the necessity of installing prerequisites.

Here is the stacktrace for dependency file_read_backwards

/home/user/tribler/venv/bin/python /home/user/tribler/scripts/application_tester/main.py -p python src/run_tribler.py -d 120 

Traceback (most recent call last):
  File "/home/user/tribler/scripts/application_tester/main.py", line 8, in <module>
    from tribler.core.utilities.utilities import make_async_loop_fragile
  File "/home/user/tribler/src/tribler/core/utilities/utilities.py", line 24, in <module>
    from tribler.core.utilities.rest_utils import HTTPS_SCHEME, HTTP_SCHEME, scheme_from_url
  File "/home/user/tribler/src/tribler/core/utilities/rest_utils.py", line 6, in <module>
    from tribler.core.utilities.path_util import Path
  File "/home/user/tribler/src/tribler/core/utilities/path_util.py", line 11, in <module>
    from file_read_backwards import FileReadBackwards
ModuleNotFoundError: No module named 'file_read_backwards'