add some explanations how to access note apps

docs/contributing/get_sample_exports.md

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+Documentation how to get sample exports from "difficult" apps. Difficult means that I don't have access through my phone, Linux desktop or Windows VM.
+
+## All Apple only Apps
+
+!!! note "TODO"
+
+## Samsung Notes
+
+!!! note "Doesn't work yet"
+
+1. Install Genymotion
+2. Disable all running adb servers if necessary (https://support.genymotion.com/hc/en-us/articles/360002734657-The-Virtual-device-is-stuck-on-booting-status)
+3. Install and startphone (for example Samsung Galaxy S10)
+4. Install "Open Gapps" (button on the right)
+5. Install a browser
+6. https://m.apkpure.com/samsung-notes/com.samsung.android.app.notes
+
+## Synology Note Station
+
+1. Go to the [demo page](https://demo.synology.com/de-de/dsm) and press the "Test" button
+2. Open Note Station by Apps -> Note Station on the top left
+3. Files can be transferred through the file system