Add documentation to the IntelliJ IDEA section

[franciscodr]

We need to provide documentation of the IntelliJ IDEA API into the Arrow Meta site in a similar way we have done for the compiler API.

So, for each functionality, we might include the following information:

• A brief description about the functionality does
• A code example where the feature is used
• If the functionality has a visual effect, an animation (GIF, video) that shows what the users see in the editor.

[i-walker]

Just a heads up for that ticket, these Doc's are those I can deliver confidently:

• [x] AnActionDocs #264
• [x] ExtensionProviderSyntax #264
• [x] DocumentationSyntax #285
• [x] ColorSyntax Docs #278
• [x] HintingSyntax Docs #281
• [x] IconProviderSyntax Docs #302
• [x] Testing Docs for Ide #264
• [x] IntentionSyntax Docs #264
• [x] InspectionSyntax Docs #276
• [x] LineMarkerSyntax Docs #275
• [ ] LiveTemplateSyntax Docs
• [ ] NavigationSyntax Docs
• [ ] SearchSyntax Docs
• [ ] RunLineMarkerSyntax Docs
• [ ] StructureView Docs
• [x] SyntaxHighlighterSyntax Docs #264