feat: enable LTO and codegen-units = 1 optimization (#20927)

## Description 

Enable Link-Time Optimization (LTO) for the project and other
optimization

## Test plan 

building process is successfully completed

## Release notes

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your changes, release notes aren't required.

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that describes the impact of your changes that a user might notice and
any actions they must take to implement updates.

- [ ] Protocol: 
- [ ] Nodes (Validators and Full nodes): 
- [ ] gRPC:
- [ ] JSON-RPC: 
- [ ] GraphQL: 
- [ ] CLI: 
- [ ] Rust SDK:

---------

Co-authored-by: mwtian <[email protected]>

Cargo.toml

@@ -218,6 +218,14 @@ strip = 'debuginfo'
 # Exit process with SIGABRT when any thread panics
 panic = 'abort'
 
+# Same as release, but build with lto (~50min build time).
+[profile.release-lto]
+inherits = "release"
+# Enable Link Time Optimization for better runtime performance
+lto = true
+# Use single codegen unit to enable better optimizations
+codegen-units = 1
+
 # Same as release, but build binary with debug symbols (binary size will be ~ 1GB).
 [profile.release-dbgsym]
 inherits = "release"