adding script to run unit tests across multiple projects

tools/run-unit-tests.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Check if a prefix argument was provided
+if [ -z "$1" ]; then
+  echo "Please provide a project prefix (e.g., agora-)."
+  exit 1
+fi
+
+# Prefix provided by the user
+PREFIX=$1
+
+# Find all projects that start with the provided prefix
+PROJECTS=$(nx show projects | grep "^$PREFIX" | tr '\n' ',' | sed 's/,$//')
+
+# Check if any projects were found
+if [ -z "$PROJECTS" ]; then
+  echo "No projects found with the prefix '$PREFIX'."
+  exit 1
+fi
+
+# Run the tests for the filtered projects
+nx run-many --target=test --projects=$PROJECTS