feat: Support Deno tasks and deno.json autocomplete in CLI

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

MacOS

### Expected behaviour

I have a Deno project with a bunch of custom "tasks" in my `deno.json` file.

When I'm in the project folder in my CLI in VS Code and I type `deno task ` I expect to see a list of autocomplete options for my tasks/scripts I have defined in my file at `./deno.json`. It should work like `yarn ` or `npm run ` autocomplete. Can Q support reading these files for Deno and doing a similar thing?

### Actual behaviour

I

no suggestions, just `task_name` which seems to be a placeholder and is not valid.

Here is a yarn example:

### Steps to reproduce

type `deno task ` and see

### Environment

```yaml
[q-details]
version = "1.12.3"
hash = "65aa9285fc7ec3716215386a89d3a626500a25a7"
date = "2025-07-03T01:14:12.212107Z (6d ago)"
variant = "full"

[system-info]
os = "macOS 15.5.0 (24F74)"
chip = "Apple M1 Max"
total-cores = 10
memory = "32.00 GB"

[environment]
cwd = "/Users/USER/workspace/fieldvest-backend"
cli-path = "/Users/USER/workspace/fieldvest-backend"
os = "Mac"
shell-path = "/bin/zsh"
shell-version = "5.9"
terminal = "VSCode"
install-method = "unknown"

[env-vars]
PATH = "/Users/USER/.nvm/versions/node/v20.19.1/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Library/Apple/usr/bin:/Users/USER/.nvm/versions/node/v20.19.1/bin:/Users/USER/.posthog:/Users/USER/.local/bin:/Users/USER/Library/Android/sdk/emulator:/Users/USER/Library/Android/sdk/tools:/Users/USER/Library/Android/sdk/tools/bin:/Users/USER/Library/Android/sdk/platform-tools:/Users/USER/Library/Application Support/Code/User/globalStorage/github.copilot-chat/debugCommand"
QTERM_SESSION_ID = "934aff6fd9614b2e902f0265b772b027"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.12.3"
SHELL = "/bin/zsh"
TERM = "xterm-256color"
ZDOTDIR = "/Users/USER"
__CFBundleIdentifier = "com.axosoft.gitkraken"
```