perf: Add MEMORY_TRADEOFFS and PERFORMANCE documentation

- Introduced MEMORY_TRADEOFFS.md to explain memory vs deduplication trade-offs in anagram generation.
- Added PERFORMANCE.md detailing optimizations for handling large volumes of anagram generation efficiently.
- Created USAGE.md for comprehensive usage instructions, including installation, basic commands, and advanced generation modes.
- Enhanced generator with streaming and batch processing capabilities for improved memory management.
- Implemented quick hashing for deduplication to reduce memory footprint.
- Updated main.rs to support new command-line arguments for streaming and batch modes.
- Added tests to ensure letter removal maintains minimum word length and to verify anagram sorting functionality.

Cargo.toml

@@ -8,6 +8,13 @@ authors = ["Rawleenc"]
 clap = { version = "4.5", features = ["derive"] }
 rand = "0.8"
 
+[dev-dependencies]
+criterion = "0.5"
+
 [[bin]]
 name = "anagram-generator"
 path = "src/main.rs"
+
+[[bench]]
+name = "generation_benchmark"
+harness = false