[Meta] Migrate C++ API&SDK documentation to new structure

[svrnm]

Tasks

• Rename "Getting Started" to "Getting Started by Example"
• Replace Instrumentation, Libraries, Exporters pages with "Record Telemetry with the API", "Manage Telemetry with the SDK", "Configure the SDK" and "Configure the SDK" pages
• Add "Instrumentation ecosystem" page
• Add "Intro to OpenTelemetry C++" page
• Add any additional pages and resources that the C++ SIG likes to add within their space

Background

Based on Restructure Language SDK & API documentation information architecture - #4853 we rolled out an updated information architecture for the language API & SDK documentations for Java via #4966 and other PRs: https://opentelemetry.io/docs/languages/java/api/

As announced on the discussion and during a maintainer's call we want to roll out the same changes across all other languages. This is the meta issue for C++

cc @open-telemetry/cpp-approvers @open-telemetry/cpp-maintainers

[devatbosch]

Hi @svrnm ,

Wanted to know is this issue still valid and open if so I would like to take it up. Also, apart from the requirements listed in Tasks & Background section, is there anything else I need to take care of...

Please do let me know...

Thank You!

[svrnm]

@devatbosch this issue is still open, to address it, you would need to review the Java docs first and see how they can be translated to C++. This can be a step-by-step process

[devatbosch]

@svrnm , got it. Sure, am checking on it...