[Rust] [Website] Update implementation status page

[asfimport]

This page is very out of date for the Rust implementation.

 https://arrow.apache.org/docs/status.html

Reporter: Andy Grove / @andygrove

Related issues:

• [Rust] [Integration Testing] Enable passing tests and update spec doc (duplicates)

_{Note: This issue was originally created as ARROW-10466. Please see the migration documentation for further details.}

[asfimport]

Neville Dipale / @nevi-me:
The PR that updates integration tests also includes the documentation for the passing tests.

We're behind with some integration aspects, so I didn't feel comfortable marking things as supported if there are still some issues with them.

[asfimport]

Todd Farmer / @toddfarmer:
Transitioning issue from Resolved to Closed to based on resolution field value.