Replace hand-written pre-commit hooks with pre-commit Python tool

`pre-commit` can be installed with pip, and configured in the Godot repo with
`pre-commit install`. It can then easily be run both locally with
`pre-commit run`, and on CI, in a cross-platform way.

This makes it much easier for contributors to set up pre-commit hooks,
without having to manually copy files to their git folder.

Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>

misc/scripts/black_format.sh

@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-
-# This script runs black on all Python files in the repo.
-
-set -uo pipefail
-
-# Apply black.
-echo -e "Formatting Python files..."
-PY_FILES=$(git ls-files -- '*SConstruct' '*SCsub' '*.py' ':!:.git/*' ':!:thirdparty/*')
-black -l 120 $PY_FILES
-
-diff=$(git diff --color)
-
-# If no diff has been generated all is OK, clean up, and exit.
-if [ -z "$diff" ] ; then
-    printf "\e[1;32m*** Files in this commit comply with the black style rules.\e[0m\n"
-    exit 0
-fi
-
-# A diff has been created, notify the user, clean up, and exit.
-printf "\n\e[1;33m*** The following changes must be made to comply with the formatting rules:\e[0m\n\n"
-# Perl commands replace trailing spaces with `·` and tabs with `<TAB>`.
-printf "%s\n" "$diff" | perl -pe 's/(.*[^ ])( +)(\e\[m)$/my $spaces="·" x length($2); sprintf("$1$spaces$3")/ge' | perl -pe 's/(.*[^\t])(\t+)(\e\[m)$/my $tabs="<TAB>" x length($2); sprintf("$1$tabs$3")/ge'
-
-printf "\n\e[1;91m*** Please fix your commit(s) with 'git commit --amend' or 'git rebase -i <hash>'\e[0m\n"
-exit 1

misc/scripts/clang_format.sh

@@ -1,53 +0,0 @@
-#!/usr/bin/env bash
-
-# This script runs clang-format and fixes copyright headers on all relevant files in the repo.
-# This is the primary script responsible for fixing style violations.
-
-set -uo pipefail
-
-if [ $# -eq 0 ]; then
-    # Loop through all code files tracked by Git.
-    files=$(git ls-files -- '*.c' '*.h' '*.cpp' '*.hpp' '*.cc' '*.hh' '*.cxx' '*.m' '*.mm' '*.inc' '*.java' '*.glsl' \
-                ':!:.git/*' ':!:thirdparty/*' ':!:*/thirdparty/*' ':!:platform/android/java/lib/src/com/google/*' \
-                ':!:*-so_wrap.*' ':!:tests/python_build/*')
-else
-    # $1 should be a file listing file paths to process. Used in CI.
-    files=$(cat "$1" | grep -v "thirdparty/" | grep -E "\.(c|h|cpp|hpp|cc|hh|cxx|m|mm|inc|java|glsl)$" | grep -v "platform/android/java/lib/src/com/google/" | grep -v "\-so_wrap\." | grep -v "tests/python_build/")
-fi
-
-if [ ! -z "$files" ]; then
-    clang-format --Wno-error=unknown -i $files
-fi
-
-# Fix copyright headers, but not all files get them.
-for f in $files; do
-    if [[ "$f" == *"inc" && "$f" != *"compat.inc" ]]; then
-        continue
-    elif [[ "$f" == *"glsl" ]]; then
-        continue
-    elif [[ "$f" == "platform/android/java/lib/src/org/godotengine/godot/gl/GLSurfaceView"* ]]; then
-        continue
-    elif [[ "$f" == "platform/android/java/lib/src/org/godotengine/godot/gl/EGLLogWrapper"* ]]; then
-        continue
-    elif [[ "$f" == "platform/android/java/lib/src/org/godotengine/godot/utils/ProcessPhoenix"* ]]; then
-        continue
-    fi
-
-    python misc/scripts/copyright_headers.py "$f"
-done
-
-diff=$(git diff --color)
-
-# If no diff has been generated all is OK, clean up, and exit.
-if [ -z "$diff" ] ; then
-    printf "\e[1;32m*** Files in this commit comply with the clang-format style rules.\e[0m\n"
-    exit 0
-fi
-
-# A diff has been created, notify the user, clean up, and exit.
-printf "\n\e[1;33m*** The following changes must be made to comply with the formatting rules:\e[0m\n\n"
-# Perl commands replace trailing spaces with `·` and tabs with `<TAB>`.
-printf "%s\n" "$diff" | perl -pe 's/(.*[^ ])( +)(\e\[m)$/my $spaces="·" x length($2); sprintf("$1$spaces$3")/ge' | perl -pe 's/(.*[^\t])(\t+)(\e\[m)$/my $tabs="<TAB>" x length($2); sprintf("$1$tabs$3")/ge'
-
-printf "\n\e[1;91m*** Please fix your commit(s) with 'git commit --amend' or 'git rebase -i <hash>'\e[0m\n"
-exit 1