Rework of the Package Builder documentation

## What New Or Updated Would You Like To See?
The documentation needs updating with new graphics showing the latest version of Chocolatey for Business, and a new summary of what users can expect when using it. It will also detail:
- Automatic detection of silent arguments
- Works with both local and remote installer files
- Can be combined with automation to streamline incrementation as new versions are released
- Can be used through the CLI or with its own GUI
- When combined with Package Templates, can increase ease-of-use and provide simplicity to a complex process
- Package Builder is one of the many C4B features that customers can use when trialing the solution

## Why Is It Needed?
The documentation is outdated and needs clarification on existing verbiage and expansion on Package Builder's capabilities.

## Additional Context?
N/A