[SL Alpha 5] Fix driver not detected issue

[RolandHewage]

Purpose

Driver is not detected due to an issue in Ballerina SL Alpha 5. This PR fix this issue.

Goals

Fix driver not detected issue

Approach

Add import ballerina/jballerina.java as _; in .bal file
Bump module version to 0.1.1

Automation tests

• Unit tests

  Done

• Integration tests

  Done

Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines? yes
• Ran FindSecurityBugs plugin and verified report? no
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets? yes

Test environment

JDK 11
Ballerina for Alpha 5
Ubuntu 20.04