Add release docs for 3.5.0 (#2207)

docs/releases/3.5.x.md

@@ -0,0 +1,24 @@
+---
+parent: Release Notes
+title: 3.5.x
+---
+
+# Modular 3.5.0
+
+- External (CDN) CSS in esm-views will be exported in `styleImports` array field
+- Fixed `modular add` from template not copying all template files when no
+  "files" field is specified in the package.json
+- Caniuse db updated in browserlist
+- Add `repository` field to the output manifest
+
+# Merged Changes
+
+- `modular-scripts` @ 3.5.0 - See
+  [the GitHub release](https://github.com/jpmorganchase/modular/releases/tag/modular-scripts%403.5.0)
+  for full details
+
+# Patch Versions
+
+Patch versions of this release do not have a dedicated summary. For details of
+patch releases, please visit
+[the GitHub releases page](https://github.com/jpmorganchase/modular/releases).