lib: call grade reset when zoom reset userdata is checked

[smbader]

There are two options in the course reset that we need to support.

The first is when the grade reset for the course is checked. This should be handled already with our existing zoom_reset_gradebook function.

The second is when zoom specific reset option is checked which reads, "Delete all user grades, recording user view data, and meeting participant user data." In this case, we were not reseting grades. So this pull requests adds zoom_reset_gradebook to that function. Since it's a nuclear checkbox that does all, we don't need to check for $data->reset_gradebook_grades

Fixes #693

[smbader]

Testing Need:

• Create Zoom activities that are graded.
• Perform the course reset grade checkbox: "All grades" and verify Zoom activity grades are reset.

Then check:

• Create Zoom activities that are graded.
• Only check the Zoom reset option: "Delete all user grades, recording user view data, and meeting participant user data."
• Verify Zoom grades have been reset.

[smbader]

@sgrandh3 will test one final time and if all is well, please feel free to hit the approve button.

[sgrandh3]

Checked the "Delete all user grades, recording user view data, and meeting participant user data." checkbox in the course reset . Grades were cleared as expected.

[armccoy]

Looks good!