Added doc page about release steps

Author: zonia3000

docs/development/index.md

@@ -8,3 +8,4 @@ Here are some useful details for `fractal-web` developments:
 * [Documentation](docs.md)
 * [Precommit](precommit.md)
 * [JSON Schema component](json_schemas.md)
+* [Release](release.md)

docs/development/release.md

@@ -0,0 +1,8 @@
+## Release
+
+Steps to release a new `fractal-web` version:
+
+* Update `CHANGELOG.md` on `main` branch, replacing the "Unreleased" temporary title with the desidered version number
+* Execute `npm version <major|minor|patch>`
+* Execute `git push origin main`
+* Execute `git push origin <new-version-tag>`