[Feature] Task Title Parts for Note Naming

Currently, the note naming feature supports variables such as {{TASK_ID}}, {{TASK_TYPE}}, {{TASK_STATE}}, {{TASK_ASSIGNEDTO}}, {{TASK_TITLE}} (#34), and {{TASK_TITLEPART_0}}, {{TASK_TITLEPART_1}}, {{TASK_TITLEPART_2}}. However, the {{TASK_TITLEPART_X}} variables default to the whole title if the specified part is empty. This feature request proposes an enhancement to allow more flexible and customizable task title parts.

Proposed Changes:
- Allow users to specify a delimiter (e.g., space, hyphen) to split the task title into parts.
- Provide an option to define a default value for each {{TASK_TITLEPART_X}} if the specified part is empty.
- Add support for more title parts (e.g., {{TASK_TITLEPART_3}}, {{TASK_TITLEPART_4}}, etc.).

Benefits:
- Improved customization and flexibility in note naming.
- Better organization and readability of task notes.
- Enhanced user experience with more control over task title formatting.

Start by locating the existing note-naming handling for TASK_TITLEPART_0, TASK_TITLEPART_1, and TASK_TITLEPART_2. Review how empty parts currently fall back to the whole title, then define the delimiter, per-part default values, and behavior for additional parts before implementing and testing the expanded naming options.

Written by the indexing model from the issue text.