feat: add multi-engine regex flavour support

public/engines/php/LICENSE.PHP-uriparser-BSD-3-Clause.txt

@@ -0,0 +1,36 @@
+uriparser - RFC 3986 URI parsing library
+
+Copyright (C) 2007, Weijia Song <songweijia@gmail.com>
+Copyright (C) 2007, Sebastian Pipping <sebastian@pipping.org>
+All rights reserved.
+
+Redistribution and use in source  and binary forms, with or without
+modification, are permitted provided  that the following conditions
+are met:
+
+    1. Redistributions  of  source  code   must  retain  the  above
+       copyright notice, this list  of conditions and the following
+       disclaimer.
+
+    2. Redistributions  in binary  form  must  reproduce the  above
+       copyright notice, this list  of conditions and the following
+       disclaimer  in  the  documentation  and/or  other  materials
+       provided with the distribution.
+
+    3. Neither the  name of the  copyright holder nor the  names of
+       its contributors may be used  to endorse or promote products
+       derived from  this software  without specific  prior written
+       permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND  ANY EXPRESS OR IMPLIED WARRANTIES,  INCLUDING, BUT NOT
+LIMITED TO,  THE IMPLIED WARRANTIES OF  MERCHANTABILITY AND FITNESS
+FOR  A  PARTICULAR  PURPOSE  ARE  DISCLAIMED.  IN  NO  EVENT  SHALL
+THE  COPYRIGHT HOLDER  OR CONTRIBUTORS  BE LIABLE  FOR ANY  DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO,  PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA,  OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT  LIABILITY,  OR  TORT (INCLUDING  NEGLIGENCE  OR  OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+OF THE POSSIBILITY OF SUCH DAMAGE.