Add back most of fetch module contents to __all__

[taldcroft]

Description

Fixes an issue where some code is relying on module attributes in fetch_eng that were removed in #269.

Interface impacts

Adds back symbols to the public API that were removed.

Testing

Unit tests

• Mac

(ska3-flight-2025.0rc2) ➜  cheta git:(add-back-all-exports) git rev-parse --short HEAD
e0432f3
(ska3-flight-2025.0rc2) ➜  cheta git:(add-back-all-exports) pytest
================================================ test session starts =================================================
platform darwin -- Python 3.12.8, pytest-8.3.4, pluggy-1.5.0
rootdir: /Volumes/git
configfile: pytest.ini
plugins: hypothesis-6.125.2, doctestplus-1.3.0, anyio-4.7.0, timeout-2.3.1
collected 175 items                                                                                                  

cheta/tests/test_comps.py ............................................................                         [ 34%]
cheta/tests/test_data_source.py .........                                                                      [ 39%]
cheta/tests/test_fetch.py .................................                                                    [ 58%]
cheta/tests/test_intervals.py .........................                                                        [ 72%]
cheta/tests/test_orbit.py .                                                                                    [ 73%]
cheta/tests/test_remote_access.py ......                                                                       [ 76%]
cheta/tests/test_sync.py ........                                                                              [ 81%]
cheta/tests/test_units.py ...........                                                                          [ 87%]
cheta/tests/test_units_reversed.py ...........                                                                 [ 93%]
cheta/tests/test_utils.py ...........                                                                          [100%]

========================================== 175 passed in 193.33s (0:03:13) ===========================================

Independent check of unit tests by [REVIEWER NAME]

• [PLATFORM]:

Functional tests

No functional testing.

[jskrist]

For my purposes (remote access to cheta telemetry data remotely from Windows), these changes work.

I noticed the following differences from version 4.62.3:

missing the following properties from the module:

• 'CACHE',
• 'DateTime',
• 'ENG_ARCHIVE',
• 'MAX_GLOB_MATCHES',
• 'ft'

added one new property:

• 'filetypes_tbl'

these differences do not impact my use at all, but am noting them incase they are not expected/intended differences.