Add GNU Taler merchant PoS terminal app

metadata/net.taler.merchantpos.yml

@@ -0,0 +1,34 @@
+Categories:
+  - Money
+License: GPL-3.0-or-later
+AuthorName: GNU Taler
+AuthorWebSite: https://taler.net/
+SourceCode: https://git.taler.net/taler-android.git/
+IssueTracker: https://bugs.gnunet.org/
+
+Summary: Process orders and take in Taler payments
+Description: |-
+    The GNU Taler merchant POS (point of sale) terminal allows sellers to
+
+    * process customers’ orders by adding or removing products
+    * calculate the amount owed by the customer
+    * let the customer make a Taler payment via QR code or NFC
+
+RepoType: git
+Repo: https://git.taler.net/taler-android.git
+
+Builds:
+  - versionName: '0.1'
+    versionCode: 2
+    commit: pos-0.1
+    subdir: merchant-terminal
+    submodules: true
+    gradle:
+      - yes
+    rm:
+      - multiplatform/wallet
+
+AutoUpdateMode: Version pos-%v
+UpdateCheckMode: Tags
+CurrentVersion: '0.1'
+CurrentVersionCode: 2