Restrict ec2 instance types

[0xjjoyy]

Use Case - Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is.

Restrict ec2 instance types that are allowed to be launched.

Expected Outcome - Describe the solution you'd like
A clear and concise description of what you want to happen.

        {
            "Sid": "GuardEC2InstanceTypes",
            "Effect": "Deny",
            "Action": "ec2:RunInstances",
            "Resource": "arn:aws:ec2:*:*:instance/*",
            "Condition": {
                "ForAnyValue:StringNotLike": {
                    "ec2:InstanceType": [
                         instance-types...
                    ]
                }
            }
        }

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Affected AWS resource
Mention the AWS resources which is affected

Impact
High: The issue makes a service level improvement which affects all users of AWS
Medium: Single feature which affects a single functionality which is optionally enabled in the AWS service
Low: Niche use case which is particularly affecting the AWS resources if it is configured in a certain way

Supported material
Can be either logs, screenshots or documentation links which provide evidence of need of this issue

I can contribute: Yes/No
If you are able to contribute towards resolving this request.

Additional context
Add any other context or screenshots about the feature request here.

Pull Request number
If a pull request has already been created.