Filter fields2

[arthanson]

Fixes: #296

From @ifoughal original PR: #365 - added tests and cleanup.

Pull request overview

This pull request adds dynamic filtering capabilities for custom object type fields, allowing users to filter custom objects based on their field values. The changes introduce a flexible filter specification system that maps each custom field type to an appropriate django-filter Filter class.

Changes:

• Introduced a FilterSpec dataclass and field type-to-filter mapping system in filtersets.py
• Added build_filter_for_field function to dynamically generate filters for custom fields
• Implemented get_filterform_field methods for Object and MultiObject field types in field_types.py
• Changed decimal field precision from 2 to 4 decimal places
• Fixed incorrect module name from "database.filtersets" to "netbox_custom_objects.filtersets"

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
netbox_custom_objects/filtersets.py	Adds FilterSpec dataclass, FIELD_TYPE_FILTERS mapping, and build_filter_for_field function to dynamically create filters for custom fields; fixes module name bug
netbox_custom_objects/field_types.py	Implements get_filterform_field methods for DecimalFieldType, ObjectFieldType, and MultiObjectFieldType; increases decimal precision from 2 to 4 places

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