v6: Batch Operations (InsertMany, DeleteMany, AddReferencesMany)

[bevzzz]

This PR adds support for -Many operations.

var things = client.collections.use("Things");

// Delete many
things.data.deleteMany(Where.property("size").gte(235), out -> out.verbose(true));
things.data.deleteMany("uuid-1", "uuid-2"); // Shorthand for chaining Where.uuid().eq(UUID), but DOES NOT accept options

// Insert many
things.data.insertMany(Map.of("name", "thing-1"), Map.of("thing-2"));
things.data.insertMany(List.of(
  WeaviateObject.of(Map.of("name", "thing-3"), 
    thing -> thing.reference("ownedBy", Reference.uuids("owner-1")),
  // ... more objects
));

// Add multiple references
WeaviateObject<?, ?, ?> myThing;
things.data.referencesAddMany(
   BatchReference.uuids(myThing, "ownedBy", "owner-2", "owner-3"));
// alternatively:
WeaviateObject<?, ?, ?> owner_4;
things.data.referencesAddMany(
   BatchReference.objects(myThing, "ownedBy", owner_4));

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Secrets	0   0   0   0	View in Orca