[Feat] Enable access to the Problems view

Currently Copilot does not have access to the Problems view. See conversation between my and copilot

{
  "conversationId": "93893c7b-bbe7-4883-bd20-f6927884647a",
  "title": "Checking for Errors in Eclipse",
  "requesterUsername": "tamasmiklossy",
  "responderUsername": "GitHub Copilot",
  "turns": [
    {
      "message": {
        "text": "Do you have access to the Problems view?"
      },
      "references": [],
      "ignoredSkills": [],
      "userLanguage": "en",
      "source": "panel",
      "model": "Claude Sonnet 4.6",
      "chatMode": "Agent",
      "customChatModeId": "Agent",
      "needToolCallConfirmation": true,
      "turnId": "122bac16-1a90-4da8-91b8-aee332d5d013",
      "role": "user",
      "timestamp": "2026-05-13T10:49:46.104340Z"
    },
    {
      "reply": {
        "annotations": [],
        "references": [],
        "hideText": false,
        "notifications": [],
        "followups": [],
        "errorMessages": [],
        "editAgentRounds": [
          {
            "roundId": 1,
            "reply": "No, I don\u0027t have direct access to the Eclipse Problems view. However, I can use the `get_errors` tool to check for compile/lint errors in specific files. Would you like me to check a particular file for errors?",
            "toolCalls": []
          }
        ],
        "panelMessages": [],
        "steps": [],
        "agentMessages": [],
        "data": {},
        "modelName": "Claude Sonnet 4.6",
        "billingMultiplier": 1.0
      },
      "suggestedTitle": "Checking for Errors in Eclipse",
      "turnId": "7c421a13-1ace-495a-b01b-44732a7856e5",
      "role": "copilot",
      "timestamp": "2026-05-13T10:49:46.298088800Z"
    }
  ],
  "creationDate": "2026-05-13T10:49:46.071703600Z",
  "lastMessageDate": "2026-05-13T10:49:50.284442600Z"
}

Start by examining how the existing get_errors tool is exposed to Copilot and how Eclipse's Problems view reports diagnostics. Define the integration needed for Copilot to access the Problems view, then verify it with an agent conversation like the attached example.