Add SiYuan (#10187)

_data/simple-icons.json

@@ -13080,6 +13080,24 @@
             "hex": "258AAF",
             "source": "https://www.sitepoint.com"
         },
+        {
+            "title": "SiYuan",
+            "hex": "D23F31",
+            "source": "https://b3log.org/brand-marking.html",
+            "aliases": {
+                "aka": [
+                    "sy"
+                ],
+                "loc": {
+                    "zh-CN": "思源笔记",
+                    "zh-HK": "思源筆記",
+                    "zh-MO": "思源筆記",
+                    "zh-MY": "思源笔记",
+                    "zh-SG": "思源笔记",
+                    "zh-TW": "思源筆記"
+                }
+            }
+        },
         {
             "title": "Skaffold",
             "hex": "2AA2D6",

icons/siyuan.svg

@@ -0,0 +1 @@
+<svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>SiYuan</title><path d="m0 8.455 6.818-6.819L12 6.818l5.182-5.182L24 8.455v13.909l-6.818-6.819v-2.314l5.182 5.182v-9.28L17.182 3.95v11.594L12 20.727l-5.182-5.182v-2.314L12 18.413v-9.28L6.818 3.95v11.594L0 22.364Z"/></svg>