Add Johansen chip antenna

library/Antenna.dcm

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+EESchema-DOCLIB  Version 2.0
+#
+$CMP ANT_JOHANSEN_CHIP
+D Miniature RF ceramic chip antenna
+K RF ceramic chip antenna
+F https://www.johansontechnology.com/antennas
+$ENDCMP
+#
+#End Doc Library

library/Antenna.lib

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+EESchema-LIBRARY Version 2.3
+#encoding utf-8
+#
+# ANT_JOHANSEN_CHIP
+#
+DEF ANT_JOHANSEN_CHIP AE 0 40 Y Y 1 F N
+F0 "AE" -200 150 50 H V C CNN
+F1 "ANT_JOHANSEN_CHIP" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ ANT*JOHANSEN*
+$ENDFPLIST
+DRAW
+S -300 100 300 -100 0 1 10 f
+P 2 0 1 10 0 100 0 350 N
+P 2 0 1 10 0 200 -100 300 N
+P 2 0 1 10 0 200 100 300 N
+X FEED 1 -400 0 100 R 50 50 1 1 I
+X TAIL 2 400 0 100 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+#End Library