Add Salesforce diagrams icons to library

[ernestovalent]

Is your feature request related to a problem?
No, I would like icons to be added

Describe the solution you'd like
Now Salesforce have a design guide to make diagrams using design Templates (as well as lucidchart).

Describe alternatives you've considered
Lucidchart have integration icons here.
Example

Additional context
About Salesforce Templates:

• Videos: Youtube playlist
• Docs: architect

[davidjgraph]

@egrimate