Support WebAssembly Tables

[veewee]

See:

• https://developer.mozilla.org/en-US/docs/WebAssembly/JavaScript_interface/Table
• https://wasmerio.github.io/wasmer-python/api/wasmer/wasmer.html#TableType

$table = new Wasm\Table(minimum: 2, maximum: null, type: 'i32', init: $initValue);

$instance = Wasm\InstanceBuilder::fromWat($wat)
    ->withImports(['env' => ['someTable' => $table]])
    ->build();


$table = $instance->getTable();
$table->set(0, 1);
$table->get(0);
$table->count(); // implements \Countable
$table->grow(2, $initValue);

// possibly:
[...$table] // implements Iterator | IteratorAggregate