Wow! This is my first time meeting someone else on itch.io who uses Embarcadero's RADstudio. I use it for all my games, coding in Delphi. I love everything I am able to do with RADstudio but finding information and support is tricky because so few people seem to use it. I don't know anything about adding libraries so I can't help you there.
I don't use it for game development, but I have used it for tools (I use C++, not delphi... but that is because I know C++). I think the UIs can be done really quick and effectively with it. You could use a theme on your application and it will make it look native to windows (they have some really slick themes). Let me know if you need help!
You should not be providing the debug version of your tool ;-). For a release you should the following:
1. Under the project view > Build Configuration (expand) then right click on the Release and make it active by selecting Activate.
2. Then run the Make command to build the executable.
3. Go to project > deployment and you can find all the locations of the required dlls to bundle next to your executable.
4. [ Optional ] Use NSIS to make an installer
Is this what you meant? I struggled at first to find and deployed builds, but after doing it over a project I streamlined the work to this. Now if you mean that you want a single click solution to get your files ready for deployment you could write an application that you point to the project folder and then is able to copy, move, and bundled your deployment tool (I have not made one for my RAD projects).