feat(build): add profiling profile configuration

Add a new [profile.profiling] section to Cargo.toml.

This profile inherits from release but with:
- strip = false: Keep debug symbols for profiling
- debug = 2: Full debug information for analysis

Useful for generating profiling data with symbol information.

Co-Authored-By: fiddlerwoaroof/git-smart-commit (unsloth/Qwen3.5-35B-A3B-GGUF:Q5_K_M)

Cargo.toml

@@ -33,3 +33,8 @@ opt-level = 3
 lto = true
 codegen-units = 1
 strip = true
+
+[profile.profiling]
+inherits = "release"
+strip = false
+debug = 2