This commit adds full support for RocksDB's SstFileManager, which enables
tracking and controlling SST file space usage and deletion rates.

Changes:

• Add SstFileManager wrapper with complete API surface:

  • set_max_allowed_space_usage() - limit total SST file space
  • set_compaction_buffer_size() - reserve space for compactions
  • is_max_allowed_space_reached() - check if limit exceeded
  • is_max_allowed_space_reached_including_compactions() - check including ongoing compactions
  • get_total_size() - query total SST file size
  • set/get_delete_rate_bytes_per_second() - control deletion rate
  • set/get_max_trash_db_ratio() - manage trash ratio
  • get_total_trash_size() - query trash size

• Add Options::set_sst_file_manager() to configure SstFileManager for database

• Upgrade RocksDB submodule from v10.4.2 to v10.6.2:

  • Native support for rocksdb_options_set_sst_file_manager C API
  • Update rocksdb_lib_sources.txt with 332 source files (was 329)

• Add comprehensive test coverage in tests/test_sst_file_manager.rs

This enables users to set maximum allowed space usage for SST files and
control their deletion rate, which is essential for managing disk space
in production deployments.