scripts: Change nxsiv-rifle to uoeia

I rewrote and extended the nsxiv-rifle script recently, and this change
now: removes the old script, adds the new one as a submodule into the
repository and links a working binary into the path.

The new script is essentially still just an image grabber-and-opener,
but supports more image viewers, is a little more advanced and can for
example replace arbitrary parts of urls (and is documented a little more
nicely).

Make qutebrowser use new script and remove leftover references to
nsxiv-rifle. Qutebrowser also gets a third option of viewing images, now
there are:

,i -> open selected link in imageviewer
,I -> open current page in imageviewer
,<C-i> -> open selected image in imageviewer

scripts/.local/bin/nsxiv-rifle

@@ -1,75 +0,0 @@
-#!/usr/bin/env sh
-#
-# Advanced nsxiv url opening script.
-#
-# Can open remote urls of individual images, galleries, and local files at the same time.
-# Uses gallery-dl for remote gallery opening - so if gallery-dl can open it, so can nsxiv.
-#
-# Usage: simply add multiple urls/paths as arguments.
-# nsxiv-rifle "https://linkto.my/image.png" my/local/relative-path.jpg /home/absolute.gif
-
-cache_dir="$(mktemp -d)"
-
-die() {
-    [ -n "$1" ] && printf '%s\n' "$*" >&2
-    exit 1
-}
-
-cleanup() {
-    rm -f -- "$cache_dir"/*
-}
-
-from_local() {
-    fpath="$(realpath -e "$1")"
-    ln -s "$fpath" "$cache_dir"
-}
-
-# invokes single image downloading or gallery downloading depending on content type
-from_remote() {
-    link="$(dereference "$1")"
-    if curl -sLI "$link" | grep -i '^Content-Type:' | grep -q image; then
-        get_single_image "$link"
-    else
-        get_gallery "$link"
-    fi
-}
-
-get_gallery() {
-    command -v gallery-dl 1>/dev/null 2>&1 || return
-    gallery-dl -q -D "$cache_dir" "$1"
-}
-
-get_single_image() {
-    pwd="$PWD"
-    cd "$cache_dir" && curl -sSLO "$1"
-    cd "$pwd" || exit 1
-}
-
-# unaliases urls which will not be downloaded correctly otherwise
-dereference() {
-    # teddit
-    if echo "$1" | grep -qe "https\?://w\?w\?w\?\.\?teddit\.net.\+"; then
-        echo "$1" | sed -e 's|^.*pics/w:null_\(.\+\)$|https://i.redd.it/\1|'
-    else
-        echo "$1"
-    fi
-}
-
-### main ###
-command -v nsxiv 1>/dev/null 2>&1 || die "Requires nsxiv installed"
-
-[ -z "$1" ] && nsxiv
-trap cleanup EXIT
-[ -d "$cache_dir" ] || mkdir -p -- "$cache_dir" || die
-im_number=1
-while [ -n "$1" ]; do
-    case "$1" in
-    *://*.*) from_remote "$1" ;;
-    *) from_local "$1" ;;
-    esac
-    im_number=$((im_number + 1))
-    shift
-done
-
-[ "$(find -L "$cache_dir" -type f -print | wc -l)" -ne 0 ] &&
-    nsxiv -p "$cache_dir"

scripts/.local/bin/uoeia

@@ -0,0 +1 @@
+../share/uoeia/uoeia