#1704 Reorganize Timing Reports Pull request opened by donn ~ Add reports for timing multi-corner STA across all process corners ~ Sort min/max report outputs by slack ~ Combine Slew, Fanout, Capacitance and Annotation Checks into one

_sta.checks.rpt

~ Combine TNS, WNS, Worst_Slack into one

_sta.summary.rpt

~ Fix regression in #1675 where logs were renamed and reports were not getting generated for some steps ~ Update documentation - Remove UMich ECO timing report vestiges * * * Based on feedback from @shalan, Fixes #875 The-OpenROAD-Project/OpenLane ✅ All checks have passed 26/26 successful checks