Enhancement: Add example to README on how to access the lambdas

[johnweland]

Forgive me I am an AWS noob, I assume to hit the lambdas for starting and stopping the server I would use API Gateway and Postman? However this looks likes it is expecting an auto token. Can you flesh out a bit of a guide in the FAQ's in the README perhaps?

I see the project hasn't been updated in a number of months. I think this is an amazing project and hope it doesn't fall to the wayside. Let me know how I can help if at all.

[rjaduthie]

You're right that this is not clear from the documentation. Some improvement could be made. I might take some time to do this in the next few days. Maybe it could do something like:

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Once you have deployed ValheimServer/LambdaEcsFargateUpdownstatusStack, you can control the server by using:

NB., the API domain is returned when running npx cdk deploy ValheimServer/LambdaEcsFargateUpdownstatusStack but is also available after the stack is deployed in the API Gateway section of the AWS web console

Get server status

https://[YOUR_API_DOMAIN]/prod/serverstatus

Stop server

https://[YOUR_API_DOMAIN]/prod/startstop?key=[PASSWORD_SET_IN_DOTENV]&desireCount=0

Start server

https://[YOUR_API_DOMAIN]/prod/startstop?key=[PASSWORD_SET_IN_DOTENV]&desireCount=1