feat(logo): 添加项目图标文件

svg为矢量图，因无损所以可作为备份

doc/image/chsrc.svg

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="100%" height="100%" viewBox="0 0 500 500" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;">
+    <g>
+        <path d="M13.392,207.176L130.909,79.868L369.203,79.868L486.608,207.055L486.608,210.821L255.801,459.814L244.311,459.814L13.392,210.7L13.392,207.176ZM250.056,118.434C186.007,118.434 134.008,170.433 134.008,234.482C134.008,298.53 186.007,350.53 250.056,350.53C314.104,350.53 366.104,298.53 366.104,234.482C366.104,170.433 314.104,118.434 250.056,118.434Z" style="fill:#a52019;"/>
+        <path d="M189.09,222.379C183.346,222.379 178.683,217.716 178.683,211.972C178.683,209.1 179.849,206.498 181.733,204.614L204.205,182.142C204.253,182.092 204.302,182.042 204.351,181.993C208.413,177.931 215.007,177.931 219.069,181.993C223.131,186.055 223.131,192.649 219.069,196.711C219.02,196.76 218.97,196.808 218.921,196.856L214.212,201.565L312.183,201.565C317.927,201.565 322.59,206.228 322.59,211.972C322.59,217.716 317.927,222.379 312.183,222.379L189.09,222.379Z" style="fill:#a52019;"/>
+        <path d="M311.547,245.378C317.29,245.378 321.954,250.042 321.954,255.785C321.954,258.657 320.788,261.259 318.904,263.143L296.431,285.616C296.383,285.665 296.335,285.715 296.286,285.764C292.224,289.826 285.629,289.826 281.568,285.764C277.506,281.703 277.506,275.108 281.568,271.046C281.617,270.997 281.666,270.949 281.716,270.901L286.424,266.193L188.453,266.193C182.71,266.193 178.046,261.529 178.046,255.785C178.046,250.042 182.71,245.378 188.453,245.378L311.547,245.378Z" style="fill:#a52019;"/>
+    </g>
+</svg>