Expose ValidateOptions in HTTPClientStorageOptions

[kevmo314]

Adds the ability to configure the JWK validation options when using the HTTP storage.

This API is necessary (I think?) for MicahParks/keyfunc#126 but I guess is also quite useful otherwise.

[MicahParks]

Thank you for the PR, @kevmo314.

There are a few other scenarios similar to this in the codebase at the moment, where default options are used without the ability to change them easily. See the below snippet.

jwkset/http.go

Lines 58 to 61 in 0a74b02

	options.HTTPURLs[u], err = NewStorageFromHTTP(nil, HTTPClientStorageOptions{})
	if err != nil {
	return nil, fmt.Errorf("failed to create HTTP client storage for %q: %w", parsed.String(), errors.Join(err, ErrNewClient))
	}

If changing any of these now before I get to MicahParks/keyfunc#126 makes anyone else's work easier, please open another PR or issue.

[MicahParks]

@kevmo314, you can use v0.5.20 to include the code from this PR.