feat(market): add startup delay option

[magisk317]

部分镜像源插件，如 storeluna ，在重启时没有market起的快（前后大概差几秒），导致market插件报错，希望通过给market增加延时选项，来规避此问题（用户可选开启）

2025-11-17 15:14:26 [I] loader apply plugin group:cron
2025-11-17 15:14:26 [I] loader apply plugin cron:zjw6ju
2025-11-17 15:14:26 [I] loader apply plugin group:nqn4w8
2025-11-17 15:14:26 [I] loader apply plugin lmarena:7ostab
2025-11-17 15:14:26 [I] loader apply plugin worldnews:i2lm39
2025-11-17 15:14:26 [I] pow cache init 300000
2025-11-17 15:14:27 [I] puppeteer chrome executable found at /usr/bin/chromium
2025-11-17 15:14:27 [I] server server listening at http://0.0.0.0:5140
2025-11-17 15:14:27 [I] console webui is available at http://127.0.0.1:5140
2025-11-17 15:14:27 [W] market SocketError: other side closed
                            at Socket.onHttpSocketEnd (/koishi/node_modules/cheerio/node_modules/undici/lib/dispatcher/client-h1.js:904:22)
                            at Socket.emit (node:events:531:35)
                            at endReadableNT (node:internal/streams/readable:1696:12)
                            at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
2025-11-17 15:14:27 [W] market TypeError: fetch failed
                            at node:internal/deps/undici/undici:13178:13
                            at async [cordis.invoke] (/koishi/node_modules/@cordisjs/plugin-http/lib/index.cjs:325:19)
                            at async Proxy.<anonymous> (/koishi/node_modules/@cordisjs/plugin-http/lib/index.cjs:178:26)
                            at async MarketProvider.collect (/koishi/node_modules/@koishijs/plugin-market/lib/node/index.js:378:22)
                            at async MarketProvider.start (/koishi/node_modules/@koishijs/plugin-market/lib/node/index.js:369:5)
                            at async /koishi/node_modules/@cordisjs/core/lib/index.cjs:1213:7
2025-11-17 15:14:27 [W] market Error: fetch http://x.x.x.x:5140/storeluna/index.json failed
                            at /koishi/node_modules/@cordisjs/plugin-http/lib/index.cjs:327:23
                            at async [cordis.invoke] (/koishi/node_modules/@cordisjs/plugin-http/lib/index.cjs:325:19)
                            at async Proxy.<anonymous> (/koishi/node_modules/@cordisjs/plugin-http/lib/index.cjs:178:26)
                            at async MarketProvider.collect (/koishi/node_modules/@koishijs/plugin-market/lib/node/index.js:378:22)
                            at async MarketProvider.start (/koishi/node_modules/@koishijs/plugin-market/lib/node/index.js:369:5)
                            at async /koishi/node_modules/@cordisjs/core/lib/index.cjs:1213:7