Migrate Web Validators from SDK v2

### Terraform CLI and Framework Versions

latest

### Use Cases or Problem Statement

A TF provider sometimes need an utility function to validate an URL from the user configured values.

### Proposal

SDK v2 provides [a collection of validators for web](https://github.com/hashicorp/terraform-plugin-sdk/blob/112e2164c381d80e8ada3170dac9a8a5db01079a/helper/validation/web.go), and it will be nicer if we can use it in the framework based plugin. Can you consider migrating them to this repo?

### Additional Information

_No response_

### Code of Conduct

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