Server: new route paths for actions on template hashes.

[SibrenJacobs]

The return type for these route paths is a new ResponseTemplateHash, this class contains the properties of the template hash:

• hash: the given template hash itself.
• valid: whether the given template hash is valid.
• status: status message of the template hash.
• expiry date time: when the template hash will expire.
• remaining expiry date time: remaining time when the template hash will expire.
• iso expiry date time: when the template hash will expire is iso format.
• remaining ms expiry time: remaining time when the template hash will expire in milliseconds.

/verify_template_hash

Verifies the template hash.

/renew_template_hash

Renews the template hash.

/invalidate_template_hash

Invalidates the template hash.