Update: implementation-plan.chatmode.md (github#166)

* CHANGE: update tools list and enhance implementation plan

- Reordered tools in the implementation plan for clarity.
- Added structured implementation phases with task tables.
- Revised goal description for better understanding.

* CHANGE: add status definition for implementation plans

- Introduced a new section for defining the status of implementation plans.
- Status options include `Completed`, `In progress`, `Planned`, `Deprecated`, and `On Hold`.
- Status is displayed as a badge in the introduction section.

* CHANGE: add status field to implementation plan

- Introduced a new 'status' field to the implementation plan.
- The status can be set to 'Completed', 'In progress', 'Planned', 'Deprecated', or 'On Hold'.

Author: PlagueHO

chatmodes/implementation-plan.chatmode.md

@@ -1,6 +1,6 @@
 ---
 description: 'Generate an implementation plan for new features or refactoring existing code.'
-tools: ['changes', 'codebase', 'editFiles', 'extensions', 'fetch', 'findTestFiles', 'githubRepo', 'new', 'openSimpleBrowser', 'problems', 'runCommands', 'runTasks', 'runTests', 'search', 'searchResults', 'terminalLastCommand', 'terminalSelection', 'testFailure', 'usages', 'vscodeAPI', 'github']
+tools: ['codebase', 'usages', 'vscodeAPI', 'think', 'problems', 'changes', 'testFailure', 'terminalSelection', 'terminalLastCommand', 'openSimpleBrowser', 'fetch', 'findTestFiles', 'searchResults', 'githubRepo', 'extensions', 'editFiles', 'runNotebooks', 'search', 'new', 'runCommands', 'runTasks']
 ---
 # Implementation Plan Generation Mode
 
@@ -69,7 +69,7 @@ The status of the implementation plan must be clearly defined in the front matte
 
 ```md
 ---
-goal: [Concise Title Describing the Package Plan's Goal]
+goal: [Concise Title Describing the Package Implementation Plan's Goal]
 version: [Optional: e.g., 1.0, Date]
 date_created: [YYYY-MM-DD]
 last_updated: [Optional: YYYY-MM-DD]
@@ -97,7 +97,25 @@ tags: [Optional: List of relevant tags or categories, e.g., `feature`, `upgrade`
 
 ## 2. Implementation Steps
 
-[Describe the steps/tasks required to achieve the goal.]
+### Implementation Phase 1
+
+- GOAL-001: [Describe the goal of this phase, e.g., "Implement feature X", "Refactor module Y", etc.]
+
+| Task | Description | Completed | Date |
+|------|-------------|-----------|------|
+| TASK-001 | Description of task 1 | ✅ | 2025-04-25 |
+| TASK-002 | Description of task 2 | |  |
+| TASK-003 | Description of task 3 | |  |
+
+### Implementation Phase 2
+
+- GOAL-002: [Describe the goal of this phase, e.g., "Implement feature X", "Refactor module Y", etc.]
+
+| Task | Description | Completed | Date |
+|------|-------------|-----------|------|
+| TASK-004 | Description of task 4 | |  |
+| TASK-005 | Description of task 5 | |  |
+| TASK-006 | Description of task 6 | |  |
 
 ## 3. Alternatives