refactor(cli): using built-in fetch instead of axios

[ysfscream]

What is the current behavior?

Currently, MQTTX CLI uses Axios for HTTP requests. This introduces an additional dependency that is not heavily utilized within the project.

Issue Number

N/A (or reference the relevant issue if one exists)

What is the new behavior?

This PR replaces Axios with the built-in Fetch API for HTTP requests in MQTTX CLI. This change aims to:

1. Reduce project dependencies
2. Decrease bundle size
3. Potentially improve performance for HTTP operations
4. Utilize modern, native JavaScript features

Does this PR introduce a breaking change?

• Yes
• No

Specific Instructions

Node.js 18 supports the built-in fetch API.

Important note regarding TypeScript configuration:

Using fetch here with adding DOM lib in tsconfig.json is not correct. See: DefinitelyTyped/DefinitelyTyped#60924. Update to Node.js 20 to resolve fetch global type issue.

To properly implement this change, we need to ensure that the project is using Node.js version 20 or later, which includes proper type definitions for the global fetch API without relying on the DOM lib.

Other information

1. The switch to the Fetch API is particularly beneficial for MQTTX CLI as it doesn't heavily rely on complex HTTP operations, making the full feature set of Axios unnecessary.
2. This change aligns the project with modern JavaScript practices and reduces external dependencies.
3. Reviewers should pay special attention to the TypeScript configurations and ensure that the Fetch API is correctly typed without introducing DOM-related issues.

[Red-Asuka]

Great job! I fully support using fetch instead of axios, it’s a better choice. Looking forward to us upgrading to Node 20 soon.