Bugfix/issue 262 page info missing on communities

[bayotheman]

🚀 Description

Included PageInfo object as an instance variable in the GetCommunityDetailsResponse component. I also included a
listAllWithPages(Pageable pageable) method which returns Page object in the CommunityService interface, and implemented in the CommunitySDJpaService. This method was used in the listAllCommunities method in the CommunityController class.

📄 Motivation and Context

When you list all communities by GET /communities, you get all the communities in a communities array, you can also page
them using page and size query parameters, but no pageInfo object is returned, which is required for further pagination
on the front-end.
This change was added to include page information to navigate the list of communities returned by the GET /communities
request.
#262

🧪 How Has This Been Tested?

Mockito unit test and postman test

📷 Screenshots (if appropriate)

📦 Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

✅ Checklist

• My code follows the code style of this project(Do your best to follow code styles. If none apply just skip this).
• My change requires a change to the documentation.
• I have updated the documentation accordingly.