new systemd services and install file for ubuntu-server

systemd/plenumbot.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=CCCB Plenum-Bot
+After=network-online.target
+
+[Service]
+ExecStart=/home/plenum-bot/plenum-bot/target/debug/Plenum-Bot
+Type=simple
+User=root
+

systemd/plenumbot.timer

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+[Unit]
+Description=CCCB Plenum-Bot
+
+[Timer]
+OnBootSec=5min
+# OnUnitActiveSec=5
+OnCalendar=*-*-* 06:00:00 Europe/Berlin
+
+[Install]
+WantedBy=multi-user.target

tools/install_dependencies_ubuntu.sh

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+# The plenum bot works when being run on a ubuntu-server
+# instance with these commands ran previously.
+# For other distros, please adapt these instructions
+# so you have the same packages installed as well.
+
+# Optionally, if you don't have rust installed, you should do it here:
+# https://www.rust-lang.org/tools/install
+
+sudo apt update
+sudo apt install gcc libssl-dev pandoc pkg-config libsqlite3-dev
+cargo build --release