feat(cable): add extensive television cable channel configurations and related files

television/cable/images.toml

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+[metadata]
+name = "images"
+description = "Browse image files with preview"
+requirements = ["fd", "chafa"]
+
+[source]
+command = [
+  { name = "Default", run = "fd -t f -e png -e jpg -e jpeg -e gif -e webp -e bmp -e svg ." },
+  { name = "Hidden",  run = "fd -t f -e png -e jpg -e jpeg -e gif -e webp -e bmp -e svg -H ." },
+]
+
+[preview]
+command = "chafa -s 80x40 '{}' 2>/dev/null || file '{}'"
+
+[keybindings]
+enter = "actions:open"
+
+[actions.open]
+description = "Open the selected image with default viewer"
+command = "xdg-open {} 2>/dev/null || open {}"
+mode = "fork"