History/most played queries

Update history service draft.

scripts/systemd-timer/cp-update-history.sh

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+#!/bin/bash
+
+sv_scripts_dir="/home/kevin/coding/spotify-lib-vis/src/scripts"
+systemd_dir="/etc/systemd/system"
+script_name="update-history"
+
+for ext in "service" "timer" ; do
+    filename="$script_name"."$ext"
+    sudo ln -s "$sv_scripts_dir"/"$filename" "$systemd_dir"/"$filename"
+done

scripts/systemd-timer/ln-update-history.sh

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+#!/bin/bash
+
+sv_scripts_dir="/home/kevin/coding/spotify-lib-vis/src/scripts"
+systemd_dir="/etc/systemd/system"
+script_name="update-history"
+
+for ext in "service" "timer" ; do
+    sudo cp "$sv_scripts_dir"/"$script_name"."$ext" "$systemd_dir"
+done

scripts/systemd-timer/update-history.service

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+[Unit]
+Description=Update my Spotify listening history job.
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/bash /home/kevin/coding/spotify-lib-vis/src/scripts/update-history.sh

scripts/systemd-timer/update-history.timer

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+[Unit]
+Description=Update my Spotify listening history.
+Requires=update-history.service
+
+[Timer]
+OnUnitInactiveSec=2h
+Persistent=true
+
+[Install]
+WantedBy=timers.target