Replace README with repository integration notice

Author: rfc2822

README.md

@@ -1,69 +1,7 @@
 
-[![Development tests](https://github.com/bitfireAT/synctools/actions/workflows/tests.yml/badge.svg)](https://github.com/bitfireAT/synctools/actions/workflows/tests.yml)
-[![Documentation](https://img.shields.io/badge/documentation-kdoc-brightgreen)](https://bitfireat.github.io/synctools/)
-
-
-# bitfireAT/synctools
-
-This library for Android provides:
-
-- low-level access to contacts, calendar and task content providers and
-- mappings between iCalendar/vCard and the content providers.
-
-It is mainly used by [DAVx⁵](https://www.davx5.com).
-
-Generated KDoc: https://bitfireat.github.io/synctools/
-
-For questions, suggestions etc. use [Github discussions](https://github.com/bitfireAT/synctools/discussions).
-We're happy about contributions! In case of bigger changes, please let us know in the discussions before.
-Then make the changes in your own repository and send a pull request.
-
-
-# Packages
-
-- `at.bitfire.synctools`: new package where everything shall be refactored into
-  - `.icalendar`: high-level operations on iCalendar objects
-  - `.mapping`: mappers between low-level (database rows) and high-level (iCalendar/vCard) objects
-  - `.storage`: low-level operations on content-provider storage (`ContentValues` / `Entity` to store data)
-- `at.bitfire.ical4android`: legacy [ical4android](https://github.com/bitfireAT/ical4android)
-- `at.bitfire.vcard4android`: legacy [vcard4android](https://github.com/bitfireAT/vcard4android)
-
-
-
-# How to use
-
-Add the [jitpack.io](https://jitpack.io) repository to your project's level `build.gradle`:
-```groovy
-allprojects {
-    repositories {
-        // ... more repos
-        maven { url "https://jitpack.io" }
-    }
-}
-```
-
-or if you are using `settings.gradle`:
-
-```groovy
-dependencyResolutionManagement {
-    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
-    repositories {
-        // ... more repos
-        maven { url "https://jitpack.io" }
-    }
-}
-```
-
-Then add the dependency to your module's `build.gradle` file:
-```groovy
-dependencies {
-   implementation 'com.github.bitfireat:synctools:<commit-id>'
-}
-```
-
-To view the available gradle tasks for the library: `./gradlew synctools:tasks`
-(the `synctools` module is defined in `settings.gradle`).
-
+> [!IMPORTANT]
+> This repository [has been integrated](https://github.com/bitfireAT/synctools/issues/385)
+> into [davx5-ose](https://github.com/bitfireAT/davx5-ose) as a Gradle submodule.
 
 ## License