docs(native): Add documentation for Presto C++ Installation

[saurabhmahawar]

Description

Added new documentation explaining how to use the Presto C++ engine. The documentation provides step-by-step instructions for configuring, and running the Presto C++ worker

Motivation and Context

There was no consolidated or beginner-friendly documentation for Presto C++ in the open-source project. Users often had difficulty understanding how to build and run the C++ worker, what dependencies were required, and how it integrates with a Presto coordinator.

Impact

There is no performance impact.

Test Plan

Contributor checklist

• [ ] Please make sure your submission complies with our contributing guide, in particular code style and commit standards.
• [ ] PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced.
• [ ] Documented new properties (with its default value), SQL syntax, functions, or other functionality.
• [ ] If release notes are required, they follow the release notes guidelines.
• [ ] Adequate tests were added if applicable.
• [ ] CI passed.
• [ ] If adding new dependencies, verified they have an OpenSSF Scorecard score of 5.0 or higher (or obtained explicit TSC approval for lower scores).

Release Notes

== NO RELEASE NOTE ==

[sourcery-ai[bot]]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Adds new Sphinx documentation describing how to install and run the Presto C++ worker, including build, configuration, and integration steps, by introducing a dedicated installation guide and wiring it into the existing Presto C++ docs hierarchy.

File-Level Changes

Change	Details	Files
Introduce a dedicated installation guide for the Presto C++ worker.	Create a new Sphinx documentation page focused on installing and configuring the Presto C++ worker Document prerequisites and dependencies required to build the C++ engine Provide step-by-step instructions for building the worker from source and configuring it to connect to a Presto coordinator Describe how to start and validate a running C++ worker instance	presto-docs/src/main/sphinx/presto_cpp/installation.rst
Wire the new installation guide into the existing Presto C++ documentation structure.	Update the main Presto C++ documentation index to reference the new installation guide Ensure the new page participates in the Sphinx TOC so it appears in the rendered docs navigation	presto-docs/src/main/sphinx/presto-cpp.rst

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[linux-foundation-easycla[bot]]

The committers listed above are authorized under a signed CLA.

• :white_check_mark: login: saurabhmahawar / name: Saurabh Mahawar (e3a5a8d5350711d773dc08c36163cbdb1573bc82)