test(test_all.sh): test script

Add a script to fast test all the test cases

test_all.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# Find all Python files containing 'test' in their name from src and tests directories
+test_files=$(find src tests -name '*test*.py')
+
+# Loop through each test file and run it with sage
+for file in $test_files; do
+    echo "Running tests in $file"
+    sage "$file"
+    echo "----------------------------------------"
+done
+
+echo "All tests completed."