Added more metrics for Autofill:

- AUTOFILL_VALUE_RESET
- FIELD_AUTOFILL_PREVIOUS_LENGTH
- AUTOFILL_DATASET_AUTHENTICATED
- AUTOFILL_INVALID_DATASET_AUTHENTICATION
- AUTOFILL_INVALID_AUTHENTICATION
- FIELD_AUTOFILL_SAVE_TYPE
- AUTOFILL_SAVE_CUSTOM_DESCRIPTION
- AUTOFILL_SAVE_CUSTOM_SUBTITLE
- AUTOFILL_SAVE_LINK_TAPPED
- AUTOFILL_SAVE_VALIDATION
- AUTOFILL_PENDING_SAVE_UI_OPERATION

Also tagged all metrics with FIELD_AUTOFILL_SERVICE, and added missing
package name on AUTOFILL_DATASET_APPLIED.

Test: CtsAutoFillServiceTestCases pass

Bug: 65118073
Bug: 65376559
Bug: 65697068

Change-Id: I678193c99d9d1b2dac56a62a88dcf20043d1b401