Update rustflags for target configurations

[binary-signal]

add targets for linux windows and apple

[leekeiabstraction]

Hope you don't mind me reviewing this.

Can you include testing details if on the PR description if any?

Or alternatively, if this follows convention, would be helpful to point out where this is retrieved from.

[binary-signal]

@leekeiabstraction
The PR modifies .cargo/config.toml to add platform-specific Rust compiler flags:

Linux target - Adds optimization flags for Linux:

--gc-sections - Remove unused sections
--as-needed - Only link needed libraries
-z,norelro - Disable relro (read-only relocations)
relocation-model=pic - Position-independent code

macOS targets - Separates into two distinct configs:
x86_64-apple-darwin (Intel Macs)
aarch64-apple-darwin (Apple Silicon)

Both use the same flags for dynamic library linking

Windows target - Adds static CRT linking:
target.x86_64-pc-windows-msvc with +crt-static feature

This enables the project to compile correctly across Linux, macOS (both Intel and ARM), and Windows with optimized settings for each platform.