doc: add contributors setting

.all-contributorsrc

@@ -0,0 +1,40 @@
+{
+    "projectName": "lancet",
+    "projectOwner": "duke-git",
+    "repoType": "github",
+    "repoHost": "https://github.com",
+    "files": [
+        "README.md",
+        "README_zh-CN.md"
+    ],
+    "imageSize": 100,
+    "commit": false,
+    "contributorsPerLine": 7,
+    "contributorsSortAlphabetically": false,
+    "badgeTemplate": "[![All Contributors](https://img.shields.io/github/all-contributors/duke-git/lancet?color=ee8449&style=flat-square)](#contributors)",
+    "contributorTemplate": "<a href=\"<%= contributor.profile %>\"><img src=\"<%= contributor.avatar_url %>\" width=\"<%= options.imageSize %>px;\" alt=\"\"/><br /><sub><b><%= contributor.name %></b></sub></a>",
+    "wrapperTemplate": "\n<table>\n  <tbody><%= bodyContent %>  </tbody>\n<%= tableFooterContent %></table>\n\n",
+    "types": {
+        "custom": {
+            "symbol": "🔭",
+            "description": "A custom contribution type.",
+            "link": "[<%= symbol %>](<%= url %> \"<%= description %>\"),"
+        }
+    },
+    "linkToUsage": true,
+    "skipCi": true,
+    "contributors": [
+        {
+            "login": "donutloop",
+            "name": "donutloop",
+            "avatar_url": "https://avatars.githubusercontent.com/u/9432921?v=4",
+            "profile": "",
+            "contributions": [
+                "code",
+                "doc",
+                "bug",
+                "review"
+            ]
+        }
+    ]
+}

README.md

@@ -1906,4 +1906,6 @@ Hello, I am a software developer and have been engaged in development work for 1
 
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
+[![All Contributors](https://img.shields.io/github/all-contributors/duke-git/lancet?color=ee8449&style=flat-square)](#contributors)
+
 Thank you to all the people who contributed to lancet!