feat: add more PHPStan stubs

phpstan/stubs/public/cache/classes/application_cache.stub

@@ -0,0 +1,6 @@
+<?php
+
+namespace core_cache;
+
+class application_cache extends cache implements loader_with_locking_interface {
+}

phpstan/stubs/public/cache/classes/cache.stub

@@ -0,0 +1,15 @@
+<?php
+
+namespace core_cache;
+
+class cache implements loader_interface {
+    /**
+     * @param string $component
+     * @param string $area
+     * @param array<mixed> $identifiers
+     * @param string $unused
+     * @return application_cache|session_cache|request_cache
+     */
+    public static function make($component, $area, array $identifiers = [], $unused = null) {
+    }
+}

phpstan/stubs/public/cache/classes/loader_interface.stub

@@ -0,0 +1,6 @@
+<?php
+
+namespace core_cache;
+
+interface loader_interface {
+}

phpstan/stubs/public/cache/classes/loader_with_locking_interface.stub

@@ -0,0 +1,6 @@
+<?php
+
+namespace core_cache;
+
+interface loader_with_locking_interface {
+}

phpstan/stubs/public/cache/classes/request_cache.stub

@@ -0,0 +1,6 @@
+<?php
+
+namespace core_cache;
+
+class request_cache extends cache {
+}

phpstan/stubs/public/cache/classes/session_cache.stub

@@ -0,0 +1,6 @@
+<?php
+
+namespace core_cache;
+
+class session_cache extends cache {
+}

phpstan/stubs/public/lib/classes/plugin_manager.stub

@@ -0,0 +1,12 @@
+<?php
+
+namespace core;
+
+class plugin_manager {
+    /**
+     * @param string $type
+     * @return class-string<\core\plugininfo\base>
+     */
+    public static function resolve_plugininfo_class($type) {
+    }
+}

phpstan/stubs/public/lib/classes/plugininfo/base.stub

@@ -0,0 +1,6 @@
+<?php
+
+namespace core\plugininfo;
+
+abstract class base {
+}