fix: 修复 bangumi search API 中的流式接口，webui 对应接口定义方法改造

- StreamingResponse 换成 EventSourceResponse，即 Server Send Event Source 方式发送数据
- webui 中 search 接口改成 rxjs Observable 方式，
  这次来不及改到 vue 里，但是写了接口 usage example；
- 顺手补了一些 vscode 通用的开发配置，
  补了之前配置文件解析漏了一个可用环境变量的 host 字段

.vscode/extensions.json

@@ -0,0 +1,18 @@
+{
+  "recommendations": [
+    // https://marketplace.visualstudio.com/items?itemName=antfu.unocss
+    "antfu.unocss",
+    // https://marketplace.visualstudio.com/items?itemName=formulahendry.auto-rename-tag
+    "formulahendry.auto-rename-tag",
+    // https://marketplace.visualstudio.com/items?itemName=streetsidesoftware.code-spell-checker
+    "streetsidesoftware.code-spell-checker",
+    // https://marketplace.visualstudio.com/items?itemName=naumovs.color-highlight
+    "naumovs.color-highlight",
+    // https://marketplace.visualstudio.com/items?itemName=ms-python.vscode-pylance
+    "ms-python.vscode-pylance",
+    // https://marketplace.visualstudio.com/items?itemName=ms-python.python
+    "ms-python.python",
+    // https://marketplace.visualstudio.com/items?itemName=vue.volar
+    "vue.volar"
+  ]
+}

.vscode/launch.json

@@ -0,0 +1,17 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Dev Backend",
+      "type": "python",
+      "request": "launch",
+      "cwd": "${workspaceFolder}/backend/src",
+      "program": "main.py",
+      "console": "integratedTerminal",
+      "justMyCode": true
+    }
+  ]
+}

.vscode/settings.json

@@ -10,4 +10,10 @@
     "editor.wordWrap": "off",
   },
   "python.venvPath": "./backend/venv",
+  "cSpell.words": [
+    "Bangumi",
+    "fastapi",
+    "mikan",
+    "starlette"
+  ],
 }