Add social icon for Signal (#1446)

layouts/partials/svg.html

@@ -597,6 +597,11 @@
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     </path>
 </svg>
+{{- else if (eq $icon_name "signal") -}}
+<svg xmlns="http://www.w3.org/2000/svg"  viewBox="0 0 24 24" fill="currentColor" stroke="none" stroke-width="2"
+    stroke-linecap="round" stroke-linejoin="round">
+  <path d="M 9.205253,0.64464814 9.4662637,1.7114982 A 10.69287,10.709597 0 0 0 6.5207075,2.9288165 L 5.9607465,1.9848669 A 11.571737,11.589837 0 0 1 9.2037889,0.64464631 Z m 5.624738,0.006259 -0.261912,1.06479996 a 10.69287,10.709597 0 0 1 2.942841,1.2238818 l 0.569383,-0.942681 A 11.718214,11.736545 0 0 0 14.829991,0.65091737 M 1.9779914,5.962053 A 11.718214,11.736545 0 0 0 0.63264603,9.2101106 l 1.06459877,0.26526 A 10.69287,10.709597 0 0 1 2.9192147,6.5279236 L 1.977993,5.9605859 Z M 1.3853391,12.02919 A 10.253437,10.269476 0 0 1 1.5057569,10.436088 L 0.42200799,10.267633 a 11.718214,11.736545 0 0 0 -0.003916,3.518027 L 1.5022097,13.622556 A 10.253437,10.269476 0 0 1 1.3853328,12.02919 m 16.6638462,10.065061 -0.561432,-0.93955 a 10.546392,10.56289 0 0 1 -2.941159,1.215857 l 0.262471,1.068318 a 11.718214,11.736545 0 0 0 3.24012,-1.344625 m 4.576868,-10.041387 q -8.91e-4,0.802487 -0.121883,1.593101 l 1.08375,0.165521 a 11.718214,11.736545 0 0 0 0.004,-3.518028 l -1.084119,0.166038 q 0.119225,0.79235 0.118342,1.593368 m 0.752698,2.814677 -1.066064,-0.26526 a 10.69287,10.709597 0 0 1 -1.221974,2.950381 l 0.94122,0.568806 a 11.718214,11.736545 0 0 0 1.346818,-3.253927 m -9.79326,7.691197 c -1.054817,0.160202 -2.128499,0.159006 -3.182958,-0.0036 l -0.165266,1.088381 a 11.718214,11.736545 0 0 0 3.509604,0.0041 L 13.584073,22.5603 Z m 6.962359,-4.199793 a 10.546392,10.56289 0 0 1 -2.25386,2.247973 l 0.652304,0.888303 A 11.718214,11.736545 0 0 0 21.4319,19.02011 Z M 18.313014,3.4847756 c 0.85912,0.6347312 1.617028,1.3955177 2.248854,2.2573915 L 21.447327,5.0829729 A 11.718214,11.736545 0 0 0 18.974613,2.5994032 Z M 3.4620766,5.7231078 A 10.546392,10.56289 0 0 1 5.7159424,3.470735 L 5.0577779,2.5838917 A 11.718214,11.736545 0 0 0 2.5780872,5.0604744 l 0.883991,0.6611664 z M 22.046886,5.9829545 21.102939,6.5496581 c 0.551205,0.9145983 0.961703,1.9082613 1.215422,2.9457616 L 23.385012,9.232537 A 11.718214,11.736545 0 0 0 22.046886,5.9829545 M 10.424439,1.5218471 a 10.69287,10.709597 0 0 1 3.181491,0.00355 l 0.165262,-1.08545108 a 11.718214,11.736545 0 0 0 -3.509603,-0.003905 z M 4.0067175,21.77345 1.7401226,22.299069 2.2699667,20.027168 1.2024224,19.776577 0.67111487,22.047008 A 1.0985825,1.1003011 0 0 0 1.987943,23.371772 L 4.2559977,22.850556 Z M 1.4305532,18.795363 2.5024951,19.043026 2.8704383,17.469271 A 10.546392,10.56289 0 0 1 1.6901058,14.58223 l -1.06518556,0.262884 a 11.718214,11.736545 0 0 0 1.07497456,2.791564 l -0.2708065,1.158683 z m 5.1240697,2.386763 -1.572112,0.365015 0.2478202,1.072705 1.157473,-0.268651 c 0.8783321,0.480709 1.8139217,0.844118 2.7848026,1.084332 L 9.4374532,22.367798 A 10.546392,10.56289 0 0 1 6.5648844,21.174803 Z M 12.01556,2.5050896 A 9.5210486,9.5359425 0 0 0 2.4868473,12.033352 9.5210486,9.5359425 0 0 0 3.9430616,17.103698 L 3.0232278,21.016812 6.9278739,20.104246 A 9.5239783,9.5388766 0 0 0 17.096701,3.9778221 9.5210486,9.5359425 0 0 0 12.01556,2.5050896" />
+</svg>
 {{- else if (eq $icon_name "soundcloud") -}}
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" stroke="none">
     <path