update net-mgmt/seafile-client

Changes: https://github.com/haiwen/seafile/commits/v6.0.2

• Removed -server options
• Regenerated/removed patchfiles
  • Return error detail for clone and sync tasks.
  • Save file sync errors to database.
  • Use unified progress for multipart uploads.
  • Remove server code.
  • Use GLib to calculate SHA1.
  • Allow compiling with GPL-compatible crypto libraries.
  • Fix some bugs.
  • Add back seafile python library.

PR: 216348
Submitted by: ultima1252@gmail.com (maintainer)
Reviewed by: matthew
Approved by: matthew (mentor)
Differential Revision: https://reviews.freebsd.org/D9292