Add zapstore (#443)

Author: alltheseas

README.md

@@ -106,6 +106,7 @@ A list of **Free** and **Open Source Software** ***(FOSS)*** for **Android** –
 * [**IzzyOnDroid**](https://gitlab.com/sunilpaulmathew/izzyondroid) <sup>**[[F-Droid](https://f-droid.org/app/in.sunilpaulmathew.izzyondroid)]**</sup>
 * [**Obtainium**](https://github.com/ImranR98/Obtainium) <sup>**[[F-Droid](https://f-droid.org/app/dev.imranr.obtainium.fdroid)]**</sup>
 * [**Sky Droid**](https://github.com/redsolver/skydroid)
+* [**Zap.Store**](https://github.com/zapstore/zapstore)
 
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