Brotli extension support

[Simbiat]

Stub for Brotli extension https://pecl.php.net/package/brotli, https://github.com/kjdev/php-ext-brotli
First time doing this, so hope everything is correct. Extension also has steam prefix compress.brotli and OB handler ob_brotli_handler, but I am unsure how to add them, if they can/should be added even. I am also not entirely sure about values for constants besides compression, since I do not see them in the extension's code itself, so I took them from https://brotli.org/encode.html and https://rcos.io/static/internal_docs/brotli_sys/index.html under assumption, that they would be the same.

[isfedorov]

@Simbiat Could you please update stubs map https://github.com/JetBrains/phpstorm-stubs?tab=readme-ov-file#how-to-update-stub-map and add appropriate folder name to \StubTests\TestData\Providers\Stubs\PhpCoreStubsProvider::$StubDirectoryMap under 'PECL' array? thank you!

[Simbiat]

What if I do not have docker? Or PHPUnit, for that matter, which is required for running tests. For the map, can I just run tests/Tools/generate-stub-map script using my local build of PHP?

[isfedorov]

For the map, can I just run tests/Tools/generate-stub-map script using my local build of PHP?

Yes, generally you can run scripts using local interpreter as well

[Simbiat]

Added updated map along with minor fixes for types