Update to vanilla 3.46.0, add math functions and geopoly

[ZmotriN]

No description provided.

[cmb69]

Thank you for the PR! Updating to SQLite 3.46.0 (which is the most recent release) should be a no-brainer, but I'm not sure about the compile time flags. SQLITE_ENABLE_MATH_FUNCTIONS probably makes sense, especially if these are already included by the build system. SQLITE_ENABLE_GEOPOLY appears to be somewhat special. Unless this extension is already enabled for the builds, it might be good to open an issue for https://github.com/php/php-src. After all, this repository is primarily targeted at providing Windows libraries for PHP.

[cmb69]

Given that SQLite3 3.46.0 is available now, and that requests for changing the configuration should be filed as https://github.com/php/php-src issues, I'm closing this PR.