Feature Request: Add Support for Recurring Tasks

### Describe your improvement idea or feature request

# Feature Request: Add Support for Recurring Tasks

## Summary
The Taskwarrior Flutter app currently does not provide proper UI support for creating, viewing, or editing recurring tasks. Taskwarrior already supports recurrence at the CLI level, but this functionality is not exposed in the Flutter interface.

This feature request proposes adding UI and integration support for recurring tasks.

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## Problem Statement
Recurring tasks are a core feature of Taskwarrior and are commonly used for:

- Daily routines
- Weekly meetings
- Monthly bills
- Habit tracking

Currently, users must rely on the CLI to create or manage recurring tasks. The Flutter app does not provide an interface for these features, which reduces usability and feature parity.

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## Additional Context
The `TaskForC` model already includes fields such as `rtype` and `recur`, but these are not fully supported in the current UI or workflow.

### How would you like to see it implemented?

## Proposed Solution

### 1. Task Creation
- Add recurrence options to the task creation UI.
- Allow users to set:
- `recur` (recurrence interval)
- `rtype` (recurrence type, if applicable)

Example options:
- Daily
- Weekly
- Monthly
- Yearly
- Custom interval

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### 2. Task Details View
- Display recurrence information clearly.
- Allow editing of recurrence settings.

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### 3. Visual Indicators
- Add an icon or label to identify recurring tasks.
- Show next occurrence if available.

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### 4. Sync Integration
- Ensure the app correctly:
- Displays generated recurring instances
- Updates after task completion
- Reflects Taskwarrior’s backend recurrence behavior

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## Benefits
- Brings the Flutter app closer to feature parity with Taskwarrior CLI.
- Reduces manual task recreation.
- Improves productivity and usability.

### Put here any screenshots or videos (optional)

_No response_

### How can we contact you (optional)

_No response_

### Would you like to work on this issue?

Yes

### By submitting this issue, I have confirmed that:

- [x] I have starred the repo ⭐ and watched 👀 it on GitHub and followed the contribution guidelines.