runtime(compiler): Add PHPStan compiler

closes: #17781

Signed-off-by: Dietrich Moerman <dietrich.moerman@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

Author: dietrichm

.github/MAINTAINERS

@@ -76,6 +76,7 @@ runtime/compiler/pandoc.vim				@Konfekt
 runtime/compiler/perl.vim				@petdance @heptite
 runtime/compiler/perlcritic.vim				@petdance @dkearns
 runtime/compiler/php.vim				@dkearns
+runtime/compiler/phpstan.vim				@dietrichm
 runtime/compiler/podchecker.vim				@petdance @dkearns
 runtime/compiler/powershell.vim				@heaths
 runtime/compiler/raco.vim				@benknoble

runtime/compiler/phpstan.vim

@@ -0,0 +1,12 @@
+" Vim compiler file
+" Compiler:	PHPStan
+" Maintainer:	Dietrich Moerman <dietrich.moerman@gmail.com>
+" Last Change:	2025 Jul 17
+
+if exists("current_compiler")
+  finish
+endif
+let current_compiler = "phpstan"
+
+CompilerSet makeprg=composer\ exec\ --\ phpstan\ analyse\ -v\ --no-progress\ --error-format=raw
+CompilerSet errorformat=%f:%l:%m,%-G%.%#