[4.x] Add support for brotli (#43055)

* Add support for brotli

Add support for brotli gzip compression in htaccess.txt

* fix description

fix description

Co-authored-by: Brian Teeman <[email protected]>

---------

Co-authored-by: Brian Teeman <[email protected]>

Author: Razzo1987

htaccess.txt

@@ -136,7 +136,7 @@ Options -Indexes
 	</IfModule>
 </IfModule>
 
-## GZIP
+## GZIP & BROTLI
 ## These directives are only enabled if the Apache mod_headers module is enabled.
 ## This section will check if a .gz file exists and if so will stream it
 ##     directly or fallback to gzip any asset on the fly
@@ -157,9 +157,9 @@ Options -Indexes
 	RewriteCond "%{REQUEST_FILENAME}\.gz" -s
 	RewriteRule "^(.*)\.js" "$1\.js\.gz" [QSA]
 
-	# Serve correct content types, and prevent mod_deflate double gzip.
-	RewriteRule "\.css\.gz$" "-" [T=text/css,E=no-gzip:1]
-	RewriteRule "\.js\.gz$" "-" [T=text/javascript,E=no-gzip:1]
+	# Serve correct content types, and prevent mod_deflate double compression.
+	RewriteRule "\.css\.gz$" "-" [T=text/css,E=no-gzip:1,E=no-brotli:1]
+	RewriteRule "\.js\.gz$" "-" [T=text/javascript,E=no-gzip:1,E=no-brotli:1]
 
 	<FilesMatch "(\.js\.gz|\.css\.gz)$">
 		# Serve correct encoding type.