Update: 添加用于 IntelliJ IDEA 的 JSON Schema

方便用户在 IDE 内绑定模板，快速编写 imports.yml 文件
Signed-off-by: べ断桥烟雨ミ <Legend_1949@126.com>

projects/import.schema.json

+{
+    "$schema": "http://json-schema.org/draft-07/schema",
+    "$comment": "https://codechina.csdn.net/codechina/mirrors-settings/-/wikis/home#%E5%90%8C%E6%AD%A5%E9%A1%B9%E7%9B%AE%E9%85%8D%E7%BD%AE",
+    "required": [
+        "group"
+    ],
+    "properties": {
+        "group": {
+            "uniqueItems": true,
+            "type": "object",
+            "description": "需要 Mirror 项目在 GitHub 项目中的 Namespace（支持组织或个人的项目）",
+            "required": [
+                "name",
+                "description",
+                "projects"
+            ],
+            "properties": {
+                "name": {
+                    "uniqueItems": true,
+                    "type": "string",
+                    "description": "项目所属的 Namespace （个人或组织）名称",
+                    "examples": [
+                        "alibaba"
+                    ]
+                },
+                "description": {
+                    "type": "string",
+                    "description": "组织/个人的简介，可以为空，填写后会被作为 Mirrors 下对应子组织的组织简介"
+                },
+                "projects": {
+                    "type": "array",
+                    "description": "需要添加的项目",
+                    "minItems": 1,
+                    "items": {
+                        "$id": "#/properties/group/projects",
+                        "anyOf": [
+                            {
+                                "$id": "#/properties/group/projects/anyOf/0",
+                                "type": "object",
+                                "required": [
+                                    "name",
+                                    "description",
+                                    "mirrorRelease",
+                                    "topic"
+                                ],
+                                "examples": [
+                                    {
+                                        "name": "p3c",
+                                        "description": "",
+                                        "mirrorRelease": false,
+                                        "topic": ""
+                                    }
+                                ],
+                                "properties": {
+                                    "name": {
+                                        "type": "string",
+                                        "description": "需要导入的项目完整名称",
+                                        "minLength": 1,
+                                        "examples": [
+                                            "p3c"
+                                        ]
+                                    },
+                                    "description": {
+                                        "type": "string",
+                                        "description": "项目的简介，可以为空，填写后会被作为同步后项目的项目简介"
+                                    },
+                                    "mirrorRelease": {
+                                        "type": "boolean",
+                                        "description": "是否需要同步 mirror 项目的 Release 附件，默认为 false（功能开发中……）",
+                                        "default": false
+                                    },
+                                    "topic": {
+                                        "type": "string",
+                                        "description": "项目的话题，可以为空，如果是多个则请用英文逗号 , 分割开，填写后会被作为同步后项目的 Topic 信息显示在项目主页中"
+                                    }
+                                }
+                            }
+                        ]
+                    }
+                }
+            }
+        }
+    },
+    "additionalProperties": false
+}