Add HS256 support

[abogdanov37]

Is your feature request related to a problem? Please describe.
As a legasy service I can use onli tokens which signature based on H256
But now when I try to emit token I get an error
From code

oidc/pkg/crypto/hash.go

Lines 16 to 27 in 9e62498

	func GetHashAlgorithm(sigAlgorithm jose.SignatureAlgorithm) (hash.Hash, error) {
	switch sigAlgorithm {
	case jose.RS256, jose.ES256, jose.PS256:
	return sha256.New(), nil
	case jose.RS384, jose.ES384, jose.PS384:
	return sha512.New384(), nil
	case jose.RS512, jose.ES512, jose.PS512:
	return sha512.New(), nil
	default:
	return nil, fmt.Errorf("%w: %q", ErrUnsupportedAlgorithm, sigAlgorithm)
	}
	}

Describe the solution you'd like
I want that library support this algorithm

Describe alternatives you've considered
Does not see alternatives

Additional context
I try to create my own OP

[hifabienne]

Thank you for sharing your idea.
If there is a significant demand from customers, we will carefully consider implementing the feature.
Currently, the issue will be added to our product backlog.
Meanwhile, if you're interested in implementing it yourself, we also welcome pull requests.