Add more quic connection C interfaces.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #293 +/- ## ========================================== Coverage ? 95.42% ========================================== Files ? 50 Lines ? 33547 Branches ? 0 ========================================== Hits ? 32013 Misses ? 1534 Partials ? 0 ```

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