add support for perltidy and pre-commit

.perltidyrc

@@ -0,0 +1,16 @@
+# Workaround needed for handling non-ASCII in files.
+# # See <https://github.com/houseabsolute/perl-code-tidyall/issues/84>.
+--character-encoding=none
+--no-valign
+# 120 characters would be desired but it is not feasible right now
+#-l=120   # 120 characters per line
+-l=160
+-fbl     # don't change blank lines
+-fnl	 # don't remove new lines
+-nsfs    # no spaces before semicolons
+-baao    # space after operators
+-bbao    # space before operators
+-pt=2    # no spaces around ()
+-bt=2    # no spaces around []
+-sbt=2   # no spaces around {}
+-sct     # stack closing tokens )}

.pre-commit-config.yaml

@@ -1,9 +1,13 @@
 repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.2.0
+    rev: v4.4.0
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
     -   id: check-json
     -   id: check-yaml
     -   id: check-added-large-files
+-   repo: https://github.com/henryykt/pre-commit-perl
+    rev: v0.0.5
+    hooks:
+    -   id: perltidy