[Meta] Update clean script, add extension to gitignore

clean script is now written in bash, now uses fd instead of find

.bbl extension has been added to gitignore and to the list of files to
be deleted

.gitignore

@@ -16,3 +16,4 @@ tibetan-lexicon-layout
 /ignored-folder/
 *.epub
 /content/ignored-folder/*
+*.bbl

clean

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+FEXT=("pdf" "tex" "aux" "log" "toc" "out" "html" "lol" "lot" "epub" "bbl")
+DIRS=("auto" "_minted*" "svg-inkscape")
+
+for e in ${FEXT[*]}; do
+    fd -uu -e "$e" -x rm {}
+done
+
+for d in ${DIRS[*]}; do
+    fd -uu -t d "$d" -x rm -r {}
+done

clean.fish

@@ -1,10 +0,0 @@
-#!/usr/bin/env fish
-set delfname "*.pdf" "*.tex" "*.aux" "*.log" "*.toc" "*.out" "*.html" "*.lol" "*.lot" "*.epub"
-set deldname "auto" "_minted*" "svg-inkscape"
-for f in $delfname
-    find -type f -name $f -delete
-end
-
-for d in $deldname
-    find -type d -name $d -exec rm -r {} +
-end