Latex module revamped

Latex language module with previews, latexmk, reftex, bibtex and others.
Completion with company mode.
Selection of bibliography using Ivy or Helm.
Later preview panel or okular as viewers.
LatexMk for compiling code.
Prettified indentation with adaptive-wrap along with good indentation of environments.
Additional fontification of common commands.

modules/lang/latex/+fontification.el

@@ -0,0 +1,89 @@
+;;; lang/latex/+fontification.el -*- lexical-binding: t; -*-
+
+;; Fontification taken from https://tex.stackexchange.com/a/86119/81279
+(setq font-latex-match-reference-keywords
+      '(
+        ;; biblatex
+        ("printbibliography" "[{")
+        ("addbibresource" "[{")
+        ;; Standard commands
+        ("cite" "[{")
+        ("Cite" "[{")
+        ("parencite" "[{")
+        ("Parencite" "[{")
+        ("footcite" "[{")
+        ("footcitetext" "[{")
+        ;; Style-specific commands
+        ("textcite" "[{")
+        ("Textcite" "[{")
+        ("smartcite" "[{")
+        ("Smartcite" "[{")
+        ("cite*" "[{")
+        ("parencite*" "[{")
+        ("supercite" "[{")
+        ;; Qualified citation lists
+        ("cites" "[{")
+        ("Cites" "[{")
+        ("parencites" "[{")
+        ("Parencites" "[{")
+        ("footcites" "[{")
+        ("footcitetexts" "[{")
+        ("smartcites" "[{")
+        ("Smartcites" "[{")
+        ("textcites" "[{")
+        ("Textcites" "[{")
+        ("supercites" "[{")
+        ;; Style-independent commands
+        ("autocite" "[{")
+        ("Autocite" "[{")
+        ("autocite*" "[{")
+        ("Autocite*" "[{")
+        ("autocites" "[{")
+        ("Autocites" "[{")
+        ;; Text commands
+        ("citeauthor" "[{")
+        ("Citeauthor" "[{")
+        ("citetitle" "[{")
+        ("citetitle*" "[{")
+        ("citeyear" "[{")
+        ("citedate" "[{")
+        ("citeurl" "[{")
+        ;; Special commands
+        ("fullcite" "[{")
+        ;; cleveref
+        ("cref" "{")
+        ("Cref" "{")
+        ("cpageref" "{")
+        ("Cpageref" "{")
+        ("cpagerefrange" "{")
+        ("Cpagerefrange" "{")
+        ("crefrange" "{")
+        ("Crefrange" "{")
+        ("labelcref" "{")))
+
+(setq font-latex-match-textual-keywords
+      '(
+        ;; biblatex brackets
+        ("parentext" "{")
+        ("brackettext" "{")
+        ("hybridblockquote" "[{")
+        ;; Auxiliary Commands
+        ("textelp" "{")
+        ("textelp*" "{")
+        ("textins" "{")
+        ("textins*" "{")
+        ;; subcaption
+        ("subcaption" "[{")))
+
+(setq font-latex-match-variable-keywords
+      '(
+        ;; amsmath
+        ("numberwithin" "{")
+        ;; enumitem
+        ("setlist" "[{")
+        ("setlist*" "[{")
+        ("newlist" "{")
+        ("renewlist" "{")
+        ("setlistdepth" "{")
+        ("restartlist" "{")
+        ("crefname" "{")))