Add a constant with the Description Size limit

[rogerioacp]

Problem trying to solve

The description field in Jira Cloud has a character limit of 32,767 characters but this is not mentioned anywhere in the Library. Additionally, there are no constant in the library with this limit.

Possible solution(s)

Add the size limit to the library as a constant. Having this information has a few benefits:

• Jira Clients can test if new tickets exceed the description size limit before sending a request to Jira Cloud to create a new ticket
• If the description size limit changes, new library versions will share this information with all clients.
• Clients don't need to keep to define their own constants.

Alternatives

No response

Additional Context

https://jira.atlassian.com/browse/JRACLOUD-68949

[SageTheWizard]

Just a note, I'm aware comments have this size limit as well.