[SYNPY-1508]: add tutorial for downloading files by Synapse ID concurrenty

[thomasyu888]

Problem:

No tutorial for downloading one file or set of files

Solution:

Add tutorial

Testing:

https://synapsepythonclient--1337.org.readthedocs.build/en/1337/

[linglp]

LGTM! I tested out the script, and it worked.

[BryanFauble]

Thanks. LGTM

[Copilot]

Pull request overview

Adds a new Python tutorial page and accompanying script to demonstrate downloading a set of Synapse Files by Synapse ID concurrently, and wires the new tutorial into the docs navigation.

Changes:

• Add a new tutorial page for downloading files by Synapse ID using the async API.
• Add the corresponding tutorial script that concurrently downloads multiple files via File.get_async() + asyncio.gather.
• Link the tutorial from mkdocs.yml nav and the Python tutorial index page.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
mkdocs.yml	Adds the new tutorial page to the MkDocs navigation.
docs/tutorials/python/tutorial_scripts/download_data_by_synid.py	New example script demonstrating concurrent downloads by Synapse ID.
docs/tutorials/python/download_data_by_synid.md	New tutorial documentation page referencing the script snippets and full source.
docs/tutorials/python_client.md	Adds a bullet linking to the new tutorial from the Python tutorials landing page.

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[Copilot]

The page anchor id (tutorial-downloading-a-file) doesn’t match this tutorial’s topic/filename (downloading by Synapse ID). This looks like a copy/paste and makes reference-style links confusing/hard to add later. Please update the anchor to a unique, descriptive id (e.g., tutorial-downloading-data-by-synapse-id).

Suggested change

	[](){ #tutorial-downloading-a-file }
	[](){ #tutorial-downloading-data-by-synapse-id }

[Copilot]

Docstring wording/capitalization is inconsistent with the rest of the docs ("Synapse IDs"); consider revising to use proper capitalization and clearer phrasing (e.g., "...downloading files by Synapse ID(s) tutorial").

Suggested change

	Here is where you'll find the code for the downloading files by synapse ids tutorial.
	Code for the downloading files by Synapse ID(s) tutorial.