feat: Improve Error Handling for Cargo in Bootstrap Script (#4211)

### Overview
This pull request introduces an improvement to the `bootstrap_native.sh`
script. It adds a preliminary check to verify whether Cargo, the Rust
package manager, is installed in the environment. This enhancement is
aimed at providing clearer error messages to developers setting up the
project.

### Changes Made
- Added a check in `bootstrap_native.sh` to determine if the `cargo`
command is available in the system.
- If Cargo is not found, the script now outputs a user-friendly error
message: `Cargo is not installed. Please install Cargo and the Rust
toolchain.`

### Motivation
During the setup process, particularly for new contributors or in
environments where Rust is not yet installed, the absence of Cargo could
lead to a cryptic error message. By explicitly checking for Cargo and
providing a clear error message, we make the setup process more
developer-friendly and intuitive.

scripts/bootstrap_native.sh

@@ -12,6 +12,12 @@ else
   export GIT_COMMIT=$(git rev-parse --verify HEAD)
 fi
 
+# Check if the 'cargo' command is available in the system
+if ! command -v cargo > /dev/null; then
+    echo "Cargo is not installed. Please install Cargo and the Rust toolchain."
+    exit 1
+fi
+
 # Build native.
 if [ -n "${DEBUG:-}" ]; then
   cargo build