Marks the start of generating a new HAR file

*Example:*
| New HAR     | myHARFile  |
| Navigate To |            |
| Get HAR     |            |
| Save HAR    |            |

For integrated HAR support, the following properties should be enabled/defined
*jspringbot.properties*
selenium.browser.mob.proxy.enabled=true
selenium.browser.mob.proxy.har.save.dir=/Users/shielabuitizon/workspace/jspringbot-selenium/target/robotframework-reports/har

!!! Note:
* Should not be used with "Proxy Properties" and "Saucelabs Properties" since HAR support is already using Selenium Proxy
