[Content collections] Move generated types to `.astro` directory (#5786)

* feat: change cacheDir to `.astro`

* feat: write reference in env.d.ts if none exists

* chore: update with-content types

* test: env.d.ts transform

* nit: setUp -> add

* refactor: content.d.ts -> types.d.ts

* chore: update confirmation log

* chore: changeset

* feat: inject env.d.ts if none exists

* feat: set up env.d.ts on `astro sync`

* chore: duplicate envTsPathRelative

* docs: update changeset

* fix: make srcDir if none exists

* fix: types.generated -> .astro in gitignore

* feat: add env.d.ts to test gitignore

* chore: remove env.d.ts from content-collections

* test: move sync tests to `astro sync`, add file write test

* refactor: simplify test gitignore to base

* fix: add / to `.astro` bc that scares me

2 files changed, 40 insertions, 38 deletions

diff --git a/examples/with-content/src/content/types.generated.d.ts b/examples/with-content/.astro/types.d.ts
index d9d0b5667..37355d003 100644
--- a/examples/with-content/src/content/types.generated.d.ts
+++ b/examples/with-content/.astro/types.d.ts
@@ -55,44 +55,45 @@ declare module 'astro:content' {
 	};
 
 	const entryMap: {
-		blog: {
-			'first-post.md': {
-				id: 'first-post.md';
-				slug: 'first-post';
-				body: string;
-				collection: 'blog';
-				data: InferEntrySchema<'blog'>;
-			};
-			'markdown-style-guide.md': {
-				id: 'markdown-style-guide.md';
-				slug: 'markdown-style-guide';
-				body: string;
-				collection: 'blog';
-				data: InferEntrySchema<'blog'>;
-			};
-			'second-post.md': {
-				id: 'second-post.md';
-				slug: 'second-post';
-				body: string;
-				collection: 'blog';
-				data: InferEntrySchema<'blog'>;
-			};
-			'third-post.md': {
-				id: 'third-post.md';
-				slug: 'third-post';
-				body: string;
-				collection: 'blog';
-				data: InferEntrySchema<'blog'>;
-			};
-			'using-mdx.mdx': {
-				id: 'using-mdx.mdx';
-				slug: 'using-mdx';
-				body: string;
-				collection: 'blog';
-				data: InferEntrySchema<'blog'>;
-			};
-		};
+		"blog": {
+"first-post.md": {
+  id: "first-post.md",
+  slug: "first-post",
+  body: string,
+  collection: "blog",
+  data: InferEntrySchema<"blog">
+},
+"markdown-style-guide.md": {
+  id: "markdown-style-guide.md",
+  slug: "markdown-style-guide",
+  body: string,
+  collection: "blog",
+  data: InferEntrySchema<"blog">
+},
+"second-post.md": {
+  id: "second-post.md",
+  slug: "second-post",
+  body: string,
+  collection: "blog",
+  data: InferEntrySchema<"blog">
+},
+"third-post.md": {
+  id: "third-post.md",
+  slug: "third-post",
+  body: string,
+  collection: "blog",
+  data: InferEntrySchema<"blog">
+},
+"using-mdx.mdx": {
+  id: "using-mdx.mdx",
+  slug: "using-mdx",
+  body: string,
+  collection: "blog",
+  data: InferEntrySchema<"blog">
+},
+},
+
 	};
 
-	type ContentConfig = typeof import('./config');
+	type ContentConfig = typeof import("../src/content/config");
 }
diff --git a/examples/with-content/src/env.d.ts b/examples/with-content/src/env.d.ts
index f964fe0cf..acef35f17 100644
--- a/examples/with-content/src/env.d.ts
+++ b/examples/with-content/src/env.d.ts
@@ -1 +1,2 @@
+/// <reference path="../.astro/types.d.ts" />
 /// <reference types="astro/client" />