[JS] Assign dictionary IDs in IPC writer rather than on creation

Currently the JS implementation relies on on the user assigning IDs for dictionaries that they create, we should do something like the C++ implementation, which uses a dictionary id memo to assign and retrieve dictionary ids in the IPC writer (https://github.com/apache/arrow/blob/master/cpp/src/arrow/ipc/metadata-internal.cc#L495).

**Reporter**: [Brian Hulette](https://issues.apache.org/jira/browse/ARROW-3523) / @TheNeuralBit
#### Related issues:
- [[JS] IPC writer doesn't serialize the dictionary of nested Vectors](https://github.com/apache/arrow/issues/19670) (relates to)

_{**Note**: *This issue was originally created as [ARROW-3523](https://issues.apache.org/jira/browse/ARROW-3523). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*}

Start by comparing the JavaScript IPC writer with the C++ reference at cpp/src/arrow/ipc/metadata-internal.cc#L495, focusing on how dictionary IDs are assigned and retrieved. Trace the current JS dictionary-ID handling and verify that the writer assigns IDs without requiring users to do so, including the related nested-dictionary serialization case.

Written by the indexing model from the issue text.