[Task]: Update Getting Started Hop GUI documentation for current project/environment controls

[seanericwatson]

What needs to happen?

The Getting Started Hop GUI documentation appears to be out of date for the current Hop GUI:
https://hop.apache.org/manual/latest/getting-started/hop-gui.html

In Apache Hop 2.18.1, the project/environment controls are located at the bottom of the Hop GUI, but the Getting Started documentation describes project/environment management as part of the main toolbar and includes two screenshots showing the older layout.

This caused confusion while following the Getting Started instructions as a new user.

The same page was previously updated under #4552, but the GUI appears to have changed since then.

Suggested update:

• Update the text describing where the project/environment controls are located.
• Update the screenshots that still show the older GUI layout.
• Update the page to reflect the current bottom/footer area of the Hop GUI, including the controls now located there.

Affected page:
Getting Started > Hop GUI

Issue Priority

Priority: 3

Issue Component

Component: Documentation

[mattcasters]

Inbound for 2.20.0: #7940, #3062