UI for choosing a template is confusing

**Describe the bug**
A clear and concise description of what the bug is.
Me and two other developers have recently learned aio to setup code projects. We each got confused at the template selection step as the cursor seems to select the template, but this is not the case. To select a template, the cursor must point to a template and the user must press spacebar.

**To Reproduce**
Steps to reproduce the behavior:
1. aio app init
2. follow prompts and observe there is no explicit direction to press spacebar when selecting templates

**Expected behavior**
The selection process should be directly stated.

**Screenshots**

**Desktop (please complete the following information):**
- OS: macOS 14.5
- iTerm

**Additional context**
Add any other context about the problem here.

Start by running `aio app init` and follow the prompts to the template-selection step. Inspect the CLI code that presents this selection and make the required Spacebar action explicit in the prompt; done means users can understand how to select a template without relying on the cursor behavior.

Written by the indexing model from the issue text.