Add tagging to AWS::MediaConnect::Flow resources via CloudFormation

### Name of the resource

AWS::MediaConnect::Flow

### Resource name

_No response_

### Description

Currently AWS::MediaConnect::Flow resources cannot be tagged via CloudFormation[1].

The MediaConnect resources can be done via the console directly or via CLI commands:
https://awscli.amazonaws.com/v2/documentation/api/latest/reference/mediaconnect/tag-resource.html

Documentation on managing Flow tags directly in console here:
https://docs.aws.amazon.com/mediaconnect/latest/ug/flows-manage-tags.html

Requesting review and adding functionality to manage tags on MediaConnect resources via CloudFormation stack/template. The above also applies to all 5 currently support MediaConnect resources:
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/AWS_MediaConnect.html

### Other Details

References
=============
[1] https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-mediaconnect-flow.html

Start by reviewing the AWS::MediaConnect::Flow CloudFormation documentation and the linked MediaConnect tag-resource CLI and console documentation. Determine how tagging is represented for Flow and the other four supported MediaConnect resources. Done means CloudFormation templates can manage tags for all five resources, with the supported behavior verified against the AWS documentation.

Written by the indexing model from the issue text.