chore(deps): add sqlite-jdbc-3.50.3.0.jar for database connectivity

What
- Added `sqlite-jdbc-3.50.3.0.jar` dependency.
- This JAR provides the JDBC driver implementation for SQLite databases.
- Enables Java programs to connect to `.db` files (`test.db`, `univ.db`) and run SQL queries via JDBC.

Why
- JDBC requires a driver to translate Java API calls into database-specific operations.
- SQLite JDBC driver is lightweight, self-contained, and does not require a separate DB server.
- Makes all JDBC examples in Section28 runnable without extra setup.

How to use
1. Add the JAR to your project classpath.
   - For manual compilation:
     ```bash
     javac -cp .:sqlite-jdbc-3.50.3.0.jar YourClass.java
     java -cp .:sqlite-jdbc-3.50.3.0.jar YourClass
     ```
   - Or add as a dependency in build tools like Maven/Gradle.
2. Load the driver in your Java code:
   ```java
   Class.forName("org.sqlite.JDBC");

	3.	Establish a connection:

Connection con = DriverManager.getConnection("jdbc:sqlite:/path/to/univ.db");

Real-life Applications
	•	Enables Java apps to use SQLite for lightweight data storage.
	•	Common in embedded apps, desktop apps, and prototypes where a serverless DB is ideal.
	•	Used in mobile apps, IoT devices, and local analytics tools where simplicity and portability matter.

Notes
	•	This is a Type-4 JDBC driver (thin driver) written in pure Java.
	•	Fully portable across platforms (Windows, macOS, Linux).
	•	No additional libraries or configurations required beyond the JAR file.

Signed-off-by: https://github.com/Someshdiwan <[email protected]>

Author: Someshdiwan