feat: Add Better auth for Auth options

[Jpisnice]

Is your feature request related to a problem? Please describe.

Better Auth is framework-agnostic authentication (and authorization) library for TypeScript. It provides a comprehensive set of features out of the box.

Describe the solution you'd like to see

Proposed Implementation

Enhanced CLI Command:

    Command: my-cli-tool init --auth-provider

    Behavior: When the --auth-provider flag is used, the CLI should:

        Accept values such as nextauth or better-auth.

        Based on the selected provider, execute the corresponding setup procedures.

Interactive Prompt:

    If the --auth-provider flag is omitted, prompt the user to select their preferred authentication provider:
    [GitHub+5Better Auth+5Stack Overflow+5](https://www.better-auth.com/docs/installation?utm_source=chatgpt.com)

Which authentication provider would you like to use?
❯ NextAuth.js
  Better Auth

Proceed with the setup based on the user's selection.

Provider-Specific Setup:

NextAuth.js:

    Install necessary dependencies.

    Generate configuration files and routes.

    Provide guidance on setting up providers and callbacks.

Better Auth:

    Execute the init command from Better Auth's CLI to scaffold necessary files and configurations:

npx @better-auth/cli@latest init --framework nextjs --database sqlite

Handle schema generation and migrations as needed.

Set up environment variables and provide guidance on plugin integrations.

Describe alternate solutions

none

Additional information