feat: allow time tracking via the CLI

[dhth]

Adds the following interface via the CLI:

List tasks

hours tasks --limit 3

[
  {
    "id": 8,
    "summary": "sql",
    "created_at": "2025-01-18T15:22:41.178314+01:00",
    "updated_at": "2025-01-20T00:14:33.732783+01:00",
    "tracking_active": false,
    "seconds_spent": 77336
  },
  {
    "id": 1,
    "summary": "javascript",
    "created_at": "2025-01-18T15:22:41.093522+01:00",
    "updated_at": "2025-01-20T00:09:39.09208+01:00",
    "tracking_active": false,
    "seconds_spent": 86100
  },
  {
    "id": 2,
    "summary": "objective-c",
    "created_at": "2025-01-18T15:22:41.105774+01:00",
    "updated_at": "2025-01-19T23:38:34.912586+01:00",
    "tracking_active": false,
    "seconds_spent": 87978
  }
]

Start tracking

hours track start 8 -c "task comment goes here"

{
  "task_id": 8,
  "task_summary": "sql",
  "begin_ts": "2025-01-20T00:20:12.719771+01:00",
  "comment": "task comment goes here"
}

Update tracking

hours track update -b '2025/01/20 00:10' -c "task comment goes here, updated"

{
  "task_id": 8,
  "task_summary": "sql",
  "begin_ts": "2025-01-20T00:10:00+01:00",
  "comment": "task comment goes here, updated"
}

End tracking

hours track stop -b '2025/01/20 00:12' -e '2025/01/20 00:18' -c "task comment goes here, updated, again"

{
  "task_id": 8,
  "task_summary": "sql",
  "begin_ts": "2025-01-20T00:12:00+01:00",
  "end_ts": "2025-01-19T23:18:00+01:00",
  "seconds_spent": 360,
  "comment": "task comment goes here, updated, again"
}

Quick switch tracking

Given, a task being tracked:

hours track start 8 -c "task comment goes here"
# after a while
hours track start 2 -c "quick switched"

{
  "task_id": 2,
  "task_summary": "objective-c",
  "begin_ts": "2025-01-20T00:23:11.275523+01:00",
  "comment": "quick switched"
}

[bjornasm]

Is there a hope that this will come into main? Being able to use the cli is really beneficial for quick start/stop of tasks especially.