Issue 19 - Some additional command support for Hubs Versions

[smorel]

ISSUE

https://github.com/petrbroz/vscode-forge-tools/issues/19

WARNING

Depends on https://github.com/petrbroz/vscode-forge-tools/pull/48 Will set as ready to review once we've merged 48.

DESCRIPTION

Adding support for the following commands on the Hub Version:

• View Manifest File
• View Thumbnails
• Copy URN To Clipboard
• Custom Translation