feat: add missing lynx examples (action-sheet, with-solidjs, zustand)

Add 3 published @lynx-example packages that were missing from the
example app. Also gitignore the generated public/lynx-examples/
directory since it's created by `pnpm prepare`.

Author: Huxpro

example/package.json

@@ -13,6 +13,7 @@
     "@douyinfe/semi-icons": "^2.74.0",
     "@douyinfe/semi-ui": "^2.75.0",
     "@lynx-example/accessibility": "0.6.5",
+    "@lynx-example/action-sheet": "0.6.5",
     "@lynx-example/animation": "0.6.7",
     "@lynx-example/bankcards": "0.6.5",
     "@lynx-example/composing-elements": "0.6.5",
@@ -51,6 +52,8 @@
     "@lynx-example/textarea": "0.6.7",
     "@lynx-example/title-bar-view": "latest",
     "@lynx-example/view": "0.6.5",
+    "@lynx-example/with-solidjs": "0.4.4",
+    "@lynx-example/zustand": "0.6.5",
     "@lynx-js/web-core": "npm:@lynx-js/web-core-canary@0.19.7-canary-20260126-5e7e43c5",
     "@lynx-js/web-elements": "^0.11.0",
     "@shikijs/transformers": "^3.4.2",