Generalize AccountsRawContactsQuery to RawContactsQuery

[vestrel00]

Problem

Due to the changes in #268 and #269, the purpose and design of the current AccountsRawContactsQuery no longer makes sense.

Solution

Generalize and expand the functionality of AccountsRawContactsQuery to RawContactsQuery. This is pretty much like Query except RawContact entities are returned instead of Contact entities.

• Refactor AccountsRawContactsQuery to RawContactsQuery
• Update RawContactRefresh.kt to use RawContactsQuery
• Update DataRawContact.kt to use RawContactsQuery
• Implement includes functions

Additionally;

• Update sample app
• Update cheatsheet (also move to basics section)
• Update relevant documentation in code
• Update relevant documentation in docs (also rename and move to basics section)
• Verify that there are no regressions for related API functions
• Provide a migration guide as a comment in this issue so that it can be copy-pasted into the release notes

[vestrel00]

Migration guide (to be included in release notes)

PREVIOUSLY, the AccountsRawContactsQuery had a very limited set of functions. Its sole purpose was to provide a way to get RawContacts directly via the BlankRawContact entity. It did not allow you to specify fields to include as it had a predefined set of included fields.

You may have used it like so,

val rawContacts = Contacts(context).accounts().queryRawContacts().find()

NOW, it has been refactored to the more powerful RawContactsQuery,

val rawContacts = Contacts(context).rawContactsQuery().find()

Read the new documentation for the full guide; https://vestrel00.github.io/contacts-android/basics/query-raw-contacts/

[vestrel00]

This is included in 0.3.0!