Bring BuiltinMethodReflection from the dead for BC reasons

See https://github.com/briannesbitt/Carbon/blob/9051283ef6398c349ef1a5283f3d95c561115db3/src/Carbon/PHPStan/Macro.php

src/Reflection/Php/BuiltinMethodReflection.php

@@ -0,0 +1,63 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\Reflection\Php;
+
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClass;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnum;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionIntersectionType;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionMethod;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionNamedType;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionParameter;
+use PHPStan\BetterReflection\Reflection\Adapter\ReflectionUnionType;
+use PHPStan\TrinaryLogic;
+
+/**
+ * @deprecated
+ */
+interface BuiltinMethodReflection
+{
+
+	public function getName(): string;
+
+	public function getReflection(): ?ReflectionMethod;
+
+	public function getFileName(): ?string;
+
+	public function getDeclaringClass(): ReflectionClass|ReflectionEnum;
+
+	public function getStartLine(): ?int;
+
+	public function getEndLine(): ?int;
+
+	public function getDocComment(): ?string;
+
+	public function isStatic(): bool;
+
+	public function isPrivate(): bool;
+
+	public function isPublic(): bool;
+
+	public function getPrototype(): self;
+
+	public function isDeprecated(): TrinaryLogic;
+
+	public function isVariadic(): bool;
+
+	public function getReturnType(): ReflectionIntersectionType|ReflectionNamedType|ReflectionUnionType|null;
+
+	public function getTentativeReturnType(): ReflectionIntersectionType|ReflectionNamedType|ReflectionUnionType|null;
+
+	/**
+	 * @return ReflectionParameter[]
+	 */
+	public function getParameters(): array;
+
+	public function isFinal(): bool;
+
+	public function isInternal(): bool;
+
+	public function isAbstract(): bool;
+
+	public function returnsByReference(): TrinaryLogic;
+
+}