Moved build scripts into "scripts/", Updated readme

Update .gitignore, compile-clean.cmd, and 38 more files...

scripts/legacy/minify-php.bat

@@ -0,0 +1,46 @@
+@echo off
+setlocal enabledelayedexpansion
+
+:: Going into the script's directory
+cd /D "%~dp0"
+
+
+:clean
+call "%~dp0clean.bat"
+:clean-end
+
+
+:php
+echo.
+echo Handling the PHP files
+echo -----------------------
+
+:php-minify
+echo Minifying PHP files...
+pushd %CD%
+:: We minify the .php files to help with some weird spacing issues that cannot be fixed with CSS.
+:: This issue is usually handled by the reverse-proxy or a middleware, but since I need to export SPA(s), I can't rely on it
+for /r "%CD%" %%F in (*.php) do (
+    set inputPath=%%F
+    set outputPath=%%~dpnF.min.php
+
+    echo ^> "!inputPath!" =^> "!outputPath!"
+    call "%~dp0node_modules\.bin\html-minifier-terser" --conservative-collapse --collapse-inline-tag-whitespace ^
+--collapse-whitespace --remove-comments --decode-entities --continue-on-parse-error -o "!outputPath!" "!inputPath!"
+)
+popd
+
+:php-relink
+echo Linking minified PHP files together...
+pushd %CD%
+:: We change every .php extension to .min.php in all the minified file.
+:: I didn't use Python because it fails miserably with utf-8 symbols...
+for /r "%CD%" %%F in (*.min.php) do (
+    node "%~dp0php-relinker.js" "%%F"
+)
+popd
+
+:php-end
+
+
+:end