horologion was the wrong book

The Horologion is the Book of Hours: the fixed portions of the services
themselves. This shows the day's commemorations, its fast and its season,
which is a Menologion. Naming it for a book whose contents it does not carry
was a real error and worth the churn to correct.

typikon already uses the word internally, for menologion.py and the data file
it loads. That is not a collision: typikon provides a menologion, this
displays one.

Renamed throughout, not just the repo: the two scripts, the QML component and
its three qmldir modules, MENOLOGION_COLORS, ~/.config/menologion/colors.json,
the eww widgets and scss variables, the waybar class. Verified standalone and
embedded in a foreign shell, and the smoke suite still passes.

Also drops the em dashes from the prose.

tests/smoke.sh

@@ -9,8 +9,8 @@
 set -uo pipefail
 
 root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
-waybar="$root/bin/horologion-waybar"
-install="$root/bin/horologion-install"
+waybar="$root/bin/menologion-waybar"
+install="$root/bin/menologion-install"
 pass=0 fail=0
 tmp="$(mktemp -d)"
 trap 'rm -rf "$tmp"' EXIT
@@ -63,9 +63,9 @@ check "--help without typikon"          0   env PATH=/usr/bin:/bin "$install" --
 check "an unknown subcommand"           2   "$install" nonsense
 mkdir -p "$tmp/a/.config/quickshell" "$tmp/a/.config/waybar"
 check "a clean run with eww absent"     0   env HOME="$tmp/a" XDG_CONFIG_HOME="$tmp/a/.config" "$install" all
-mkdir -p "$tmp/b/.local/bin" "$tmp/b/.config"; : > "$tmp/b/.local/bin/horologion-waybar"
+mkdir -p "$tmp/b/.local/bin" "$tmp/b/.config"; : > "$tmp/b/.local/bin/menologion-waybar"
 check "a real file at the target"       1   env HOME="$tmp/b" XDG_CONFIG_HOME="$tmp/b/.config" "$install" all
-[ -L "$tmp/a/.local/bin/horologion-waybar" ] \
+[ -L "$tmp/a/.local/bin/menologion-waybar" ] \
     && ok "the clean run actually linked" || bad "the clean run actually linked"
 
 echo