add temperature logging

[rmburg]

Why? What?

Jul 04 13:01:52 Ernst-Guenther bash[70137]: cpu-thermal: 90 C
Jul 04 13:01:52 Ernst-Guenther bash[70137]: gpu-thermal: 92 C
Jul 04 13:01:52 Ernst-Guenther bash[70137]: cv0-thermal: 84 C
Jul 04 13:01:52 Ernst-Guenther bash[70137]: cv1-thermal: 84 C
Jul 04 13:01:52 Ernst-Guenther bash[70137]: cv2-thermal: 81 C
Jul 04 13:01:52 Ernst-Guenther bash[70137]: soc0-thermal: 83 C
Jul 04 13:01:52 Ernst-Guenther bash[70137]: soc1-thermal: 84 C
Jul 04 13:01:52 Ernst-Guenther bash[70137]: soc2-thermal: 84 C
Jul 04 13:01:52 Ernst-Guenther bash[70137]: tj-thermal: 92 C
Jul 04 13:01:52 Ernst-Guenther bash[70137]: iwlwifi_1: 68 C

ToDo / Known Issues

none

Ideas for Next Iterations (Not This PR)

dedicated script file instead of cryptic ExecStartPre=

How to Test

gammaray with recent pepsi
pepsi muschel 42 "journalctl -fu jetson-clocks-refresh.service"

[knoellle]

LGTM