Add TidesDB 9(v9.3.3) storage engine

The libtidesdb C library is vendored under storage/tidesdb/libtidesdb/ and compiled into a static archive that is statically linked into the loadable plugin module, mirroring storage/rocksdb, the engine is self-contained and needs no system-installed libtidesdb. include/providers is removed from the
engine's include dirs so the bundled zstd/lz4/snappy link directly instead of routing through MariaDB's compression-provider plugins.

For cross-version portability, spatial- and fulltext-index detection uses the HA_SPATIAL / HA_FULLTEXT key flags (with a HA_SPATIAL/HA_FULLTEXT -> *_legacy rename shim) rather than KEY::algorithm, which older servers leave
unset; my_global.h is included before handler.h so the server typedefs it needs are defined.

Adds the tidesdb mysql-test suite covering CRUD, MVCC and pessimistic locking, transactions/savepoints, isolation levels, compression, encryption, TTL, full-text, spatial, partitioning, object-store offload and crash/durability. The vector test auto-skips where the VECTOR type is unavailable (before 11.7).

Builds and full mysql-test suite shows green on MariaDB 11.4 (LTS) through to 13.0.2