feat: add Zeabur deployment

[yuaanlin]

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Added documentation and preset for Zeabur.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[nuxt-studio]

✅ Live Preview ready!

Name	Edit	Preview	Latest Commit
nitro	Edit on Studio ↗︎	View Live Preview	f8fd8af

[pan93412]

LGTM! Any demo site of this?

[yuaanlin]

LGTM! Any demo site of this?

Sure, here is a Nuxt.js app deployed on Zeabur: https://nuxtjs.zeabur.app/ (source: https://github.com/zeabur/nuxtjs-template).

And the zeabur preset in this PR is already tested:

❯ NITRO_PRESET=zeabur pnpm nitro build examples/hello-world/

> nitropack@2.8.0 nitro /Users/yuanlin/Developer/nitro
> NODE_OPTIONS="--enable-source-maps" jiti ./src/cli/index.ts "build" "examples/hello-world/"

✔ Generated public examples/hello-world/.zeabur/output/static                                                                                         nitro 2:32:11 PM
ℹ Building Nitro Server (preset: zeabur)                                                                                                              nitro 2:32:11 PM
✔ Nitro server built                                                                                                                                  nitro 2:32:11 PM
  ├─ examples/hello-world/.zeabur/output/functions/__nitro.func/chunks/index.mjs (267 B) (191 B gzip)
  ├─ examples/hello-world/.zeabur/output/functions/__nitro.func/chunks/index.mjs.map (170 B) (136 B gzip)
  ├─ examples/hello-world/.zeabur/output/functions/__nitro.func/chunks/nitro/zeabur.mjs (140 kB) (33.9 kB gzip)
  ├─ examples/hello-world/.zeabur/output/functions/__nitro.func/chunks/nitro/zeabur.mjs.map (3.7 kB) (751 B gzip)
  ├─ examples/hello-world/.zeabur/output/functions/__nitro.func/index.mjs (224 B) (174 B gzip)
  └─ examples/hello-world/.zeabur/output/functions/__nitro.func/package.json (113 B) (108 B gzip)
Σ Total size: 145 kB (35.2 kB gzip)

nitro on  main [!] is 📦 v2.8.0 via  v20.8.0 on ☁️  (ap-northeast-1) 
❯ NITRO_PRESET=zeabur pnpm nitro build examples/api-routes/

> nitropack@2.8.0 nitro /Users/yuanlin/Developer/nitro
> NODE_OPTIONS="--enable-source-maps" jiti ./src/cli/index.ts "build" "examples/api-routes/"

✔ Generated public examples/api-routes/.zeabur/output/static                                                                                          nitro 2:33:00 PM
ℹ Building Nitro Server (preset: zeabur)                                                                                                              nitro 2:33:00 PM
✔ Nitro server built                                                                                                                                  nitro 2:33:00 PM
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/_..._.mjs (433 B) (257 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/_..._.mjs.map (234 B) (152 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/_name_.mjs (288 B) (200 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/_name_.mjs.map (249 B) (163 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/hello.mjs (258 B) (185 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/hello.mjs.map (167 B) (132 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/nitro/zeabur.mjs (141 kB) (34 kB gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/nitro/zeabur.mjs.map (3.7 kB) (751 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/test.get.mjs (266 B) (185 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/test.get.mjs.map (174 B) (133 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/test.post.mjs (270 B) (187 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/chunks/test.post.mjs.map (176 B) (133 B gzip)
  ├─ examples/api-routes/.zeabur/output/functions/__nitro.func/index.mjs (224 B) (174 B gzip)
  └─ examples/api-routes/.zeabur/output/functions/__nitro.func/package.json (113 B) (108 B gzip)
Σ Total size: 147 kB (36.7 kB gzip)

[pi0]

Let's try on nightly!