Add numeric SDK version macros to C/C++

[Wumpf]

What

• Fixes Version Comparison Macros for C++ #6379
• Related to Add __version__ and __version_info__ to rerun package #7104

Allows finally to do #if preprocessor checks on Rerun versions.
Uses the same up update version script introduced for Python and does away with cmake driven duplication of rerun.h

Checklist

• I have read and agree to Contributor Guide and the Code of Conduct
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Deployed docs

Commit	Link
5f49b0f	https://landing-gtwg1fe9i-rerun.vercel.app/docs