feat: add response interceptor && check for secret key and base url in env first

[dammy001]

This PR includes:

• Checking for base URL and secret key from the env first so I don't really need to pass it as required anymore. For this to work you have to add MAPLERAD_BASE_URL and MAPLERAD_SECRET_KEY in your env

const Maplerad = new Maplerad()

• Added response interceptor which eliminates the return response.data duplicated around
• Added prettier for formatting the codebase
• Ship types definition.
• Add src directory for SOC
• git ignore the dist folder. I'm not sure why it's been pushed to remote repo

@Khrees2412 please check and confirm there's no breaking change

[dammy001]

@Khrees2412