Switch from cutechess-cli to fastchess

[vondele]

fixes https://github.com/official-stockfish/fishtest/issues/2106

This PR switches from cutechess-cli to fast-chess.

cutechess-cli has been serving us well in the past years, however, some issues have accumulated, namely the difficulty of compiling cutechess-cli, the observed timeouts at high concurrency and short TC, and e.g. slowness when indexing larger books. fast-chess https://github.com/Disservin/fast-chess has addressed these issues, and has now probably become mature enough to serve as the game manager for fishtest.

As an example of its ability to deal with short TC and high concurrency: https://dfts-0.pigazzini.it/tests/view/669249cdbee8253775cede32 with concurrency 25, and TC 1+0.01s no timeouts are observed.

fast-chess is built from sources, with the zip download as well as the binary cached as needed. There is fine-grained control over which version of fast-chess is used, so we can easily upgrade for new features.

In this PR, fast-chess is built in cutechess compatibility to facilitate integration, and to benefit from the existing fishtest checks. Once validated, we should be able to switch easily to its native mode, which can output trinomial and pentanomial results, and we should be able significantly simplify the worker's book-keeping.