New helper functions were added to make call-site less likely to need
to pull `go.opentelemetry.io/otel/attribute` as a dependency.
Additionally `Encrypted` and `Masked` were added to add a possibility of
logging sensitive data in a more secure manner.
Some commonly used at maal attributes have been encoded as consts with
convinience wrappers similar to those of semconv package from otel sdk.
Additionally some utils that can generate mutliple attributes were added.
