Manage SQLite dependency with CMake

[Chocobo1]

Instead of using an option to specify which version to use, just try to detect if it exists on system. And if not detected, fetch the source.

[codecov[bot]]

Codecov Report

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

Project coverage is 88.43%. Comparing base (cde1fd2) to head (0f2271d).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #568 +/- ## ======================================= Coverage 88.43% 88.43% ======================================= Files 58 58 Lines 13537 13537 ======================================= Hits 11971 11971 Misses 1566 1566 ```

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