chore: replace localnet_setup with rust installation

scripts/install_rust.sh

@@ -0,0 +1,42 @@
+#!/bin/sh
+
+echo "*** Checking if Rust is already installed"
+
+if which rustup >/dev/null 2>&1; then
+    echo "Rust is already installed. Exiting."
+    exit 0
+fi
+
+echo "*** Installing Rust"
+
+if [[ "$(uname)" == "Darwin" ]]; then
+    # macOS
+    if ! which brew >/dev/null 2>&1; then
+        /bin/bash -c "$(curl -fsSL https://github.com/raw/Homebrew/install/master/install.sh)"
+    fi
+
+    brew update
+    brew install openssl cmake llvm
+    elif [[ "$(uname)" == "Linux" ]]; then
+    if [[ -f "/etc/arch-release" ]]; then
+        # Arch Linux
+        sudo pacman -Syu --noconfirm
+        sudo pacman -S --noconfirm cmake pkgconf openssl git gcc clang
+    else
+        # Ubuntu (and other Debian-based distributions)
+        sudo apt-get update
+        sudo apt-get install -y cmake pkg-config libssl-dev git gcc build-essential clang libclang-dev
+    fi
+else
+    echo "Unsupported operating system. Exiting."
+    exit 1
+fi
+
+curl https://sh.rustup.rs -sSf | sh -s -- -y
+source "$HOME/.cargo/env"
+rustup default stable
+
+rustup update nightly
+rustup target add wasm32-unknown-unknown --toolchain nightly
+
+echo "*** Rust installation complete"