API enhancements

New API added that enables bulk confirm/un-confirm ignore/un-ignore of snippet matches.

PUT /api/projects/{projectId}/versions/{versionId}/bulk-snippet-bom-entries Media Type: application/vnd.blackducksoftware.bill-of-materials-6+json

The following API endpoints have been updated to consider projects the user can access via project group membership. The query parameter has also changed from name to entityName for parity with the response content.
- ```
GET /api/users/{userId}/assignable-projects
```
- ```
GET /api/users/{userId}/assignable-project-groups/
```
- ```
GET /api/usergroups/{userGroupId}/assignable-projects
```
- ```
GET /api/usergroups/{userGroupId}/assignable-project-groups
```