Add python side input pattern

[Arunodoy18]

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[gemini-code-assist[bot]]

Summary of Changes

Hello @Arunodoy18, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances Apache Beam's capabilities across both its Python and Java SDKs. It provides a valuable new Python example for managing dynamic side inputs that update periodically, which is crucial for scenarios requiring fresh reference data. Concurrently, it refines the BigQueryIO connector in Java by improving the configuration and validation for streaming writes, particularly with the STORAGE_API_AT_LEAST_ONCE method, and by explicitly supporting Change Data Capture (CDC) operations. Additionally, new file system utilities are introduced to better handle special characters in file paths. These changes collectively improve the flexibility, robustness, and ease of use for developers building data pipelines with Apache Beam.

Highlights

• New Python Side Input Pattern: Introduced a new Python example (side_input_slow_update_global_window) demonstrating how to implement a periodically updating side input using PeriodicSequence and global windows in Apache Beam. This pattern is useful for scenarios where side input data needs to be refreshed dynamically.
• BigQueryIO Write Method Enhancements: Extended validation and configuration for BigQueryIO's STORAGE_API_AT_LEAST_ONCE write method, ensuring proper handling of triggeringFrequency for unbounded PCollections and removing a redundant warning.
• BigQueryIO CDC Support: Enabled Change Data Capture (CDC) functionality for BigQueryIO's STORAGE_WRITE_API by passing the usesCdc flag, and added a test to prevent IllegalStateException when using CDC with this write method.
• Glob Wildcard Utilities: Added escapeGlobWildcards and unescapeGlobWildcards utility methods to the Java FileSystems class for robust handling of file paths containing glob characters, ensuring they can be treated as literals.

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[Arunodoy18]

I have done some changes in this issues. Please review this and let me know any changes is needed. Thank you mate.

[github-actions[bot]]

Checks are failing. Will not request review until checks are succeeding. If you'd like to override that behavior, comment assign set of reviewers

[Arunodoy18]

assign set of reviewers

[github-actions[bot]]

Assigning reviewers:

R: @damccorm for label python. R: @Abacn for label java. R: @Abacn for label website.

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[github-actions[bot]]

Reminder, please take a look at this pr: @damccorm @Abacn @Abacn

[github-actions[bot]]

Assigning new set of reviewers because Pr has gone too long without review. If you would like to opt out of this review, comment assign to next reviewer:

R: @shunping for label python. R: @ahmedabu98 for label java. R: @shunping for label website.

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[damccorm]

waiting on author