Fixes #142: Renamed filters module to resolve collision with netbox-branching

[arcticash]

Renamed netbox_lifecycle/templatetags/filters.py to netbox_lifecycle_filters.py and updated all {% load filters %} references.

This PR Fixes issue #142

Root Cause

The plugin's templatetag module templatetags/filters.py conflicts with netbox-branching (Thanks to @cruse1977 for the pointer!) as both used utilities/templatetags/filters.py. The library from netbox-ranching is resolved first during {% load filters %}, meaning date_badge_class is never found.

Changes

• Renamed netbox_lifecycle/templatetags/filters.py to netbox_lifecycle/templatetags/netbox_lifecycle_filters.py
• Updated {% load filters %} to {% load netbox_lifecycle_filters %} in all affected templates
• Updated import in tests/test_templatetags.py

Testing

Tested against NetBox 4.5.4 and 4.5.5 with netbox-lifecycle 1.1.8 and netbox-branching . Device detail pages now load correctly with lifecycle date badges rendering as expected.

[arcticash]

Updated the PR description to reflect the actual root cause being netbox-branching plugin and not netbox core as originally suspected

[cruse1977]

Note - we are renaming this is in branching ; but for completeness, we should do both

[jsenecal]

Tests failures are not related to this change, otherwise, this looks good to me.

[DanSheps]

@jsenecal Can you fix the conflict?

[jsenecal]

Hi @DanSheps this is not my work, I don't seem to have the rights to commit on @arcticash pr branch.
@arcticash, can you fix the conflicts, we fixed a lot of linitng errors so things moved around a lot...

[DanSheps]

Sorry, for some reason thought it was yours. If it doesn't get updated by eod I might close it out and redo it

[arcticash]

Not sure if this has already been included in a separate change but I've re-applied the module renaming on top of the latest changes to main