add prescription for teams

prescription.d/teams.sh

+#!/bin/sh
+
+# TODO: common place
+fatal()
+{
+    echo "FATAL: $*" >&2
+    exit 1
+}
+
+[ "$1" != "--run" ] && echo "Install Microsoft Teams for Linux from the official site" && exit
+
+[ "$(distro_info -a)" != "x86_64" ] && echo "Only x86_64 is supported" && exit 1
+
+# rpm and deb contains the same binaries
+#https://packages.microsoft.com/yumrepos/ms-teams/teams-1.3.00.25560-1.x86_64.rpm
+
+# epm uses eget to download * names
+epm --noscripts install "https://packages.microsoft.com/repos/ms-teams/pool/main/t/teams/teams_*_amd64.deb"