Update `mmif.serialize.annotation.Annotation:id` to always use "long" form

[keighrim]

Because

As inspected and proposed in clamsproject/mmif#228, current specification that allows "scoped" short annotation ID's not only makes writing code to identify annotations using identifiers, but also has a serious flaw. To mitigate the problem, we decided to first update existing getters and setters of annotation ID's in serialize package to use "long" form all the time.

Done when

mmif-python/mmif/serialize/annotation.py

Lines 160 to 166 in 281e2cd

	@property
	def id(self) -> str:
	return self.properties.id
	@id.setter
	def id(self, aid: str) -> None:
	self.properties.id = aid

is updated to match long_id property, and all other parts of code that uses id or long_id property are updated accordingly.

Additional context

This proposed change will vastly break compatibility of the SDK to existing CLAMS app code, so we need a version marker that can mark this breakage. (#293 )