gh-137847: Add typical usage for uuid 6,7,8 in /lib/uuid.py

[LamentXU123]

Before we've got some typical usage in the very beginning of uuid.py

r"""UUID objects (universally unique identifiers) according to RFC 4122/9562.This module provides immutable UUID objects (class UUID) and functions forgenerating UUIDs corresponding to a specific UUID version as specified inRFC 4122/9562, e.g., uuid1() for UUID version 1, uuid3() for UUID version 3,and so on.Note that UUID version 2 is deliberately omitted as it is outside the scopeof the RFC.If all you want is a unique ID, you should probably call uuid1() or uuid4().Note that uuid1() may compromise privacy since it creates a UUID containingthe computer's network address. uuid4() creates a random UUID.Typical usage: >>> import uuid # make a UUID based on the host ID and current time >>> uuid.uuid1() # doctest: +SKIP UUID('a8098c1a-f86e-11da-bd1a-00112444be1e') # make a UUID using an MD5 hash of a namespace UUID and a name >>> uuid.uuid3(uuid.NAMESPACE_DNS, 'python.org') UUID('6fa459ea-ee8a-3ca4-894e-db77e160355e') # make a random UUID >>> uuid.uuid4() # doctest: +SKIP UUID('16fd2706-8baf-433b-82eb-8c7fada847da') # make a UUID using a SHA-1 hash of a namespace UUID and a name >>> uuid.uuid5(uuid.NAMESPACE_DNS, 'python.org') UUID('886313e1-3b8a-5372-9b90-0c9aee199e5d') # make a UUID from a string of hex digits (braces and hyphens ignored) >>> x = uuid.UUID('{00010203-0405-0607-0809-0a0b0c0d0e0f}') # convert a UUID to a string of hex digits in standard form >>> str(x) '00010203-0405-0607-0809-0a0b0c0d0e0f' # get the raw 16 bytes of the UUID >>> x.bytes b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f' # make a UUID from a 16-byte string >>> uuid.UUID(bytes=x.bytes) UUID('00010203-0405-0607-0809-0a0b0c0d0e0f') # get the Nil UUID >>> uuid.NIL UUID('00000000-0000-0000-0000-000000000000') # get the Max UUID >>> uuid.MAX UUID('ffffffff-ffff-ffff-ffff-ffffffffffff')"""

but the typical usage stops at uuid5. This PR add more for newly uuids (6, 7, 8)
I'm using the old issue here XD.
skipping news.

• Issue: Add examples for UUIDv6-8 #137847

[picnixz]

I don't think we really need to really expand the docstring. I'm more interested in having it online instead. Also, could you open a separate issue for this? (namely updating the rst and possible the py file) keeping the now-closed issue would be too much now.

[AA-Turner]

I agree with @picnixz here, closing.