chore(.gitignore): add 'next-env.d.ts' globally and remove tracked files (#10083)

Author: sukvvon

.gitignore

@@ -20,6 +20,7 @@ dist-ts
 .env.test.local
 .env.production.local
 .next
+next-env.d.ts
 
 npm-debug.log*
 yarn-debug.log*

examples/react/auto-refetching/next-env.d.ts

@@ -32,4 +32,3 @@ yarn-error.log*
 
 # typescript
 *.tsbuildinfo
-next-env.d.ts

examples/react/infinite-query-with-max-pages/next-env.d.ts

@@ -32,4 +32,3 @@ yarn-error.log*
 
 # typescript
 *.tsbuildinfo
-next-env.d.ts