[I] [Docs] Add "Feature Matrix" or "Capability Status" table to Provider pages [libcloud]

["Jai-76 (via GitHub)" <gi...@apache.org>]

Jai-76 opened a new issue, #2084:
URL: https://github.com/apache/libcloud/issues/2084

   ### Is your feature request related to a problem? Please describe.
   Currently, the "Supported Providers" documentation lists which drivers exist (e.g., EC2, Azure ARM, GCE), but it is difficult for a user to determine the **depth of support** for each provider without diving into the source code.
   
   **The Problem:**
   A user looking at the [Compute Providers page](https://libcloud.apache.org/supported_providers.html) sees that "Amazon EC2" is supported. However, they cannot easily verify:
   1.  Does it support recent features like IMDSv2 (Instance Metadata Service v2)?
   2.  Does it support Spot Instance requests via the unified API?
   3.  Are the `list_sizes` or `list_images` methods hardcoded or dynamically fetched?
   
   This opacity makes it hard for architects to evaluate Libcloud against the native SDKs (Boto3, Azure SDK) for their specific needs.
   
   ### Describe the solution you'd like
   I propose enhancing the documentation for major providers (Compute/Storage) to include a **Capability Status Matrix**.
   
   **Proposed Documentation Update:**
   On the individual provider pages (or a centralized matrix), we should track the support status of standard API methods.
   
   *Example Table:*
   | Feature | Support Status | Notes |
   | :--- | :--- | :--- |
   | `create_node` | ✅ Full | Supports user_data, SSH keys |
   | `list_sizes` | ⚠️ Partial | Hardcoded list (last updated 2024) |
   | `deploy_node` | ✅ Full | |
   | `ex_start_node` | ✅ Extension | Provider-specific extension |
   | `IPv6 Support` | ❌ No | |
   
   ### Describe alternatives you've considered
   * **Status Quo:** Users must install the library and run `dir(driver)` or inspect the source code to find capabilities.
   * **Automated Badge:** Generating this matrix automatically from the test suite (e.g., based on which methods are overridden in the driver class). This would be the ideal long-term solution.
   
   ### Additional Context
   As cloud providers add features rapidly, Libcloud's value proposition is "unification." Clear documentation on *what* is unified vs. what requires extension methods (`ex_*`) is critical for adoption.


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