Extend Handle method to parse HTTP method in pattern

[Spartan09]

Updated the Handle method in the chi router to support patterns that include an HTTP method. This enhancement allows users to specify the HTTP method directly in the route pattern, such as "GET /path". The change is backward compatible, allowing patterns without an HTTP method to be handled as before.

• Added logic to split the pattern into HTTP method and path.
• Validated the extracted HTTP method against known methods.
• Used the existing handle method for routing with the specified method.
• Ensured backward compatibility for patterns without an HTTP method.
• Included error handling for unrecognized HTTP methods.
• Added comprehensive tests to cover new functionality and edge cases.

[pkieltyka]

thanks for the PR :) will review

[pkieltyka]

nice work :D LGTM