Add project icon for IntelliJ IDEA

[Pankraz76]

Having issues navigating its simpler to check some icon than some random chars.

Add project icon for IntelliJ IDEA to match other high tier projects, as well.

• Add project icon spring-projects/spring-framework#34444
• Pull #2282: Add project icon for IntelliJ IDEA apache/maven#2283
• Add project icon for IntelliJ IDEA diffplug/spotless#2522

google/google-java-format#1264

[cpovirk]

Do you know where we can find information about using the Google logo in locations like this? It may well be fine, but I'd want to have a page somewhere that clarifies that we can copy it here, and I'm not sure how quickly we can find such a thing.

[Pankraz76]

clarifies that we can copy it here

did not get this, not sure what you mean.

Yes im wondering too, how this is moved to other repos as well.

Seeing the nice copy tool, this might be something good for all the google projects.

[cpovirk]

Sorry, I mean that the part of Google responsible for the logos may have rules for which projects are allowed to use them. My guess is that it's not an issue, but I've seen rules for "similar" things, like which projects have to present themselves on GitHub as "not an official Google project."