Add comprehensive test suite for BuddAI v3.1

- Implemented tests for database initialization, SQL injection prevention, auto-learning pattern extraction, module detection, complexity detection, LRU cache performance, session export, actionable suggestions, repository indexing, search query safety, and context window management.
- Utilized SQLite for database operations and temporary directories for test isolation.
- Included detailed output for test results with color-coded pass/fail indicators.

examples/buddai_generated.csharp

@@ -0,0 +1,21 @@
+// Define the LED pin
+const int ledPin = 9;
+
+void setup() {
+  // Set up the LED pin as an output
+  pinMode(ledPin, OUTPUT);
+}
+
+void loop() {
+  // Turn the LED on
+  digitalWrite(ledPin, HIGH);
+
+  // Wait for 1 second (1000 milliseconds)
+  delay(1000);
+
+  // Turn the LED off
+  digitalWrite(ledPin, LOW);
+
+  // Wait for another 1 second
+  delay(1000);
+}