e1-tracer: add a generic 0603 blue LED type w/ Vf=2.8V

designating LTST-C193TBKT-5A for now
diff --git a/hardware/eagle/e1-tracer.brd b/hardware/eagle/e1-tracer.brd
index 27d65fe..ae6f3c2 100644
--- a/hardware/eagle/e1-tracer.brd
+++ b/hardware/eagle/e1-tracer.brd
@@ -2094,7 +2094,7 @@
 <attribute name="VALUE" x="93.8848" y="46.6725" size="1.1" layer="27" font="vector" ratio="16" rot="R90"/>
 </element>
 <element name="CDONE" library="led" package="CHIPLED_0805" value="BLUE" x="71.755" y="18.0975" smashed="yes" rot="R180">
-<attribute name="LINK" value="UNKNOWN LINK" x="71.755" y="18.0975" size="1.778" layer="27" rot="R180" display="off"/>
+<attribute name="LINK" value="https://www.digikey.de/product-detail/de/lite-on-inc/LTST-C193TBKT-5A/160-1827-1-ND" x="71.755" y="18.0975" size="1.778" layer="27" rot="R180" display="off"/>
 <attribute name="SOURCEPARTNUMBER" value="UNKNOWN SOURCE PART NUMBER" x="71.755" y="18.0975" size="1.778" layer="27" rot="R180" display="off"/>
 <attribute name="MANUFACTURERPARTNUMBER" value="UNKNOWN MANUFACTURER PART NUMBER" x="71.755" y="18.0975" size="1.778" layer="27" rot="R180" display="off"/>
 <attribute name="POPULATED" value="TRUE" x="71.755" y="18.0975" size="1.778" layer="27" rot="R180" display="off"/>
@@ -3251,7 +3251,7 @@
 </element>
 </elements>
 <signals>
-<signal name="GND">
+<signal name="GND" class="1">
 <contactref element="U1" pad="EXP"/>
 <contactref element="C3" pad="1"/>
 <contactref element="C2" pad="1"/>
@@ -3532,7 +3532,7 @@
 <wire x1="93.345" y1="34.925" x2="95.885" y2="34.925" width="0.3048" layer="16"/>
 <wire x1="93.345" y1="27.305" x2="96.2025" y2="27.305" width="0.3048" layer="16"/>
 <wire x1="93.345" y1="24.765" x2="96.2025" y2="24.765" width="0.3048" layer="16"/>
-<wire x1="93.6625" y1="37.465" x2="96.2025" y2="37.465" width="0.3048" layer="16"/>
+<wire x1="93.0275" y1="37.465" x2="96.2025" y2="37.465" width="0.3048" layer="16"/>
 <wire x1="68.20285" y1="1.89125" x2="68.24875" y2="1.25625" width="0.4064" layer="1"/>
 <wire x1="68.24875" y1="1.25625" x2="68.2625" y2="4.1275" width="0.4064" layer="1"/>
 <via x="68.2625" y="4.1275" extent="1-16" drill="0.3"/>
@@ -3582,6 +3582,7 @@
 <wire x1="56.405" y1="67.665" x2="55.2825" y2="67.665" width="0.4064" layer="1"/>
 <wire x1="55.2825" y1="67.665" x2="55.245" y2="67.6275" width="0.4064" layer="1"/>
 <via x="55.245" y="67.6275" extent="1-16" drill="0.3048"/>
+<wire x1="92.71" y1="37.465" x2="93.0275" y2="37.465" width="0.4064" layer="16"/>
 </signal>
 <signal name="VCC_3V3" class="1">
 <contactref element="R5" pad="2"/>