[Requests and ideas] Let us set respectGitignore as in Copilot CLI

**Mood:** 😊
**Category:** Requests and ideas

Copilot CLI lets us set a setting "respectGitignore" to false. Right now I cannot find a settings for this in the app.

I believe it is not only my workflow to have a local, git ignored, important files in the repo (e.g. plans) that I'd like to attach in the chat. Right now I can't, file picker doesn't see them. When explicitly asked about existing of given gitignored file, agent answer such file doesn't exist.

ref similar problem that was reported for the CLI, there I found the settings flag: https://github.com/github/copilot-cli/issues/2084

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| Field | Value |
| --- | --- |
| App version | 0.2.4 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 1 |