Fix #105 - #121

src/EventLoop/Driver/EvDriver.php:181:21: MixedArrayOffset: Cannot access value on variable $this->events[$id] using mixed offset (see https://psalm.dev/031)

src/EventLoop/Driver/EvDriver.php:177:21: MixedPropertyTypeCoercion: $this->events expects 'array<string, EvWatcher>', parent type `non-empty-array<array-key, EvWatcher>` provided (see https://psalm.dev/196)

src/EventLoop/Driver/EvDriver.php:177:21: MixedArrayOffset: Cannot access value on variable $this->events[$id] using mixed offset (see https://psalm.dev/031)

src/EventLoop/Driver/EvDriver.php:173:44: MixedPropertyFetch: Cannot fetch property on mixed var $callback (see https://psalm.dev/034)

src/EventLoop/Driver/EvDriver.php:173:38: MixedAssignment: Unable to determine the type that $id is being assigned to (see https://psalm.dev/032)

src/EventLoop/Driver/EvDriver.php:173:24: MixedArrayOffset: Cannot access value on variable $this->events using mixed offset (see https://psalm.dev/031)

src/EventLoop/Driver/EvDriver.php:172:32: MixedAssignment: Unable to determine the type that $callback is being assigned to (see https://psalm.dev/032)

examples/benchmark-timers-delay.php:13:29: MixedArgumentTypeCoercion: Argument 2 of Revolt\EventLoop::delay expects Closure(string):void, but parent type Closure provided (see https://psalm.dev/194)

examples/benchmark-ticks-delay.php:13:26: MixedArgumentTypeCoercion: Argument 1 of Revolt\EventLoop::defer expects Closure(string):void, but parent type Closure provided (see https://psalm.dev/194)

examples/benchmark-memory.php:24:21: MixedMethodCall: Cannot call constructor on an unknown class (see https://psalm.dev/015)