added shell script to install holochain and lair binaries

setup/install_binaries.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+REQUIRED_HOLOCHAIN_VERSION="0.2.3-beta-rc.1"
+REQUIRED_LAIR_VERSION="0.3.0"
+
+# Check that this script is being run from the right location
+if [ ! -f "package.json" ] || [ ! -f "src-tauri/tauri.conf.json" ];
+then
+    echo "Error: You must run this script in the root directory of the kangaroo repository."
+    exit 1
+fi
+
+# Check wheter cargo is available
+if [ ! command -v cargo &> /dev/null ] || [ ! command -v rustc &> /dev/null ];
+then
+    echo "Error: You need to install Rust first."
+    exit 1
+fi
+
+# get target architecture triple, e.g. unknown-linux-gnu on Ubuntu 22.04
+TARGET_TRIPLE=$(rustc -vV | sed -n 's/^.*host: \(.*\)*$/\1/p')
+
+# create src-tauri/bins if id doesn't exist
+if [ ! -d src-tauri/bins ];
+    then mkdir src-tauri/bins
+fi
+
+# check whether correct holochain binary is already in the src-tauri/bins folder
+if [ -f "src-tauri/bins/holochain-v${REQUIRED_HOLOCHAIN_VERSION}-$TARGET_TRIPLE" ];
+    then echo "Required holochain binary already installed."
+    else
+    	echo "Installing required holochain binary from crates.io"
+    	echo "Running command 'cargo install holochain --version $REQUIRED_HOLOCHAIN_VERSION --locked --features sqlite-encrypted'"
+        cargo install holochain --version $REQUIRED_HOLOCHAIN_VERSION --locked --features sqlite-encrypted
+        echo "Copying holochain binary to src-tauri/bins folder."
+        HOLOCHAIN_PATH=$(which holochain)
+        cp $HOLOCHAIN_PATH src-tauri/bins/holochain-v${REQUIRED_HOLOCHAIN_VERSION}-$TARGET_TRIPLE     
+fi
+
+# check whether correct lair binary is already in the src-tauri/bins folder
+if [ -f "src-tauri/bins/lair-keystore-v${REQUIRED_LAIR_VERSION}-${TARGET_TRIPLE}" ];
+
+    then echo "Required lair-keystore binary already installed."
+    else
+    	echo "Installing required lair-keystore binary from crates.io"
+    	echo "Running command 'cargo install lair-keystore --version $REQUIRED_LAIR_VERSION --locked'"
+        cargo install  lair_keystore --version $REQUIRED_LAIR_VERSION --locked
+        echo "Copying lair-keystore binary to src-tauri/bins folder."
+        LAIR_PATH=$(which lair-keystore)
+        cp $LAIR_PATH src-tauri/bins/lair-keystore-v${REQUIRED_LAIR_VERSION}-$TARGET_TRIPLE     
+fi
+
+echo "done.\n"