Refactor pre-commit hooks to use prek (#976)

* ci: change to prek for pre-commit

* refactor: fix shellcheck warnings for the scripts

* chore: unify whitespace formatting

* nix: add prek to dev shell

quickshell/assets/sounds/plasma/LICENSE

@@ -104,4 +104,4 @@ c. No term or condition of this Public License will be waived and no failure to
 d. Nothing in this Public License constitutes or may be interpreted as a limitation upon, or waiver of, any privileges and immunities that apply to the Licensor or You, including from the legal processes of any jurisdiction or authority.
 Creative Commons is not a party to its public licenses. Notwithstanding, Creative Commons may elect to apply one of its public licenses to material it publishes and in those instances will be considered the "Licensor." The text of the Creative Commons public licenses is dedicated to the public domain under the CC0 Public Domain Dedication. Except for the limited purpose of indicating that material is shared under a Creative Commons public license or as otherwise permitted by the Creative Commons policies published at creativecommons.org/policies, Creative Commons does not authorize the use of the trademark "Creative Commons" or any other trademark or logo of Creative Commons without its prior written consent including, without limitation, in connection with any unauthorized modifications to any of its public licenses or any other arrangements, understandings, or agreements concerning use of licensed material. For the avoidance of doubt, this paragraph does not form part of the public licenses.
 
-Creative Commons may be contacted at creativecommons.org.
+Creative Commons may be contacted at creativecommons.org.

quickshell/assets/sounds/wavconvert.sh

@@ -9,7 +9,7 @@ for file in *.oga; do
     fi
 done
 
-# Convert plasma sounds  
+# Convert plasma sounds
 cd ../plasma
 for file in *.ogg; do
     if [ -f "$file" ]; then