Add ResearchGate

Closes #1912

_data/simple-icons.json

@@ -2821,6 +2821,11 @@
             "hex": "217DC6",
             "source": "https://seeklogo.com/vector-logo/184137/renren-inc"
         },
+        {
+            "title": "ResarchGate",
+            "hex": "00CCBB",
+            "source": "https://c5.rgstatic.net/m/428059296771819/images/favicon/favicon.svg"
+        },
         {
             "title": "ReverbNation",
             "hex": "E43526",

icons/researchgate.svg

@@ -0,0 +1 @@
+<svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>ResearchGate icon</title><path d="M3 0h18a3 3 0 013 3v18a3 3 0 01-3 3H3a3 3 0 01-3-3V3a3 3 0 013-3zm10 19.05a2.92 2.92 0 002 1.08l.15.15v.55l-.09.14a2.81 2.81 0 01-1 .18 3.73 3.73 0 01-3-1.31A32.84 32.84 0 017.86 15h-1.4v3.4c0 1.14.19 1.45.75 1.53l1.1.15.13.15v.62l-.16.15c-.9 0-1.8-.06-2.71-.06H3.71L3 21l-.16-.15v-.62l.16-.16.8-.15c.57-.11.75-.41.75-1.54V10c0-1.12-.18-1.43-.74-1.53L3 8.31l-.13-.15v-.62L3 7.39h5.41c2.68 0 4.42 1.3 4.42 3.64a4.09 4.09 0 01-2.92 3.74A25.41 25.41 0 0013 19.05zm-5.16-5.29H6.46V8.64H8c1.73 0 2.7.89 2.7 2.49a2.59 2.59 0 01-2.89 2.66zm10-6.32a.24.24 0 01-.26-.25v-.71a.24.24 0 01.26-.25h2.28a.24.24 0 01.25.25V8a4.25 4.25 0 01-.14.71 2.33 2.33 0 01-.93 1.3 2.91 2.91 0 01-1.65.48A2.86 2.86 0 0116 10a2.4 2.4 0 01-1-1.32 1.89 1.89 0 010-.3 7.46 7.46 0 01-.1-1V5.86c0-.32.05-.63.1-1a1.89 1.89 0 01.09-.34A2.4 2.4 0 0116 3.3a2.86 2.86 0 011.63-.45 3 3 0 01.89.12 2.43 2.43 0 01.71.32 2.51 2.51 0 01.54.48 2.71 2.71 0 01.36.57.24.24 0 01-.1.36l-.75.3a.24.24 0 01-.35-.11 1.57 1.57 0 00-.52-.63 1.31 1.31 0 00-.77-.2 1.1 1.1 0 00-.76.23 1.27 1.27 0 00-.5.68 2.28 2.28 0 00-.1.52 22.83 22.83 0 000 2.34 2.36 2.36 0 00.1.53 1.07 1.07 0 00.44.6 1.41 1.41 0 00.82.24 1.56 1.56 0 00.82-.2 1 1 0 00.42-.57l.05-.15L19 8a3.43 3.43 0 000-.53h-1.14z"/></svg>