Allow using Deno as package manager

### Command

new

### Description

Add `deno` as a package manager, such that it can be used during project creation or automatically used when it's lockfile is found.

```sh
ng new --package-manager=deno my-project
```

### Deno Details

- Add package command: [`deno add`](https://docs.deno.com/runtime/reference/cli/add/)
- Install all command: [`deno install`](https://docs.deno.com/runtime/reference/cli/install/)
- Lockfile file: `deno.lock`
- Dev only flag: [`--dev`](https://docs.deno.com/runtime/reference/cli/add/#options-dev) (e.g. `deno add --dev `)

Deno seems to have the same commands as the other package manager options, and is similar to `pnpm` in that it installs packages with symlinks in `node_modules`.

### Describe the solution you'd like

Deno works similar to `bun` as package manager.

### Describe alternatives you've considered

None. If `bun` is supported, it seems reasonable to support `deno` too.

從 `new` 命令現有的套件管理器處理開始，並將 `bun` 路徑與要求的 Deno 命令進行比較。當 `ng new --package-manager=deno my-project` 可以正常運作、`deno.lock` 觸發自動選擇，且新增套件時在適當情況下使用帶有 `--dev` 的 `deno add`，就算完成。

由索引模型根據 Issue 內容生成。