Provides a short access to document elements by ID via delegated

[jonnyzzz]

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property syntax. Received element is not cached and received directly from the [Document] by calling [Document.getElementById] function on every property access. Throws an exception if element is not found or has different type To access an element with theId ID use the following property declaration

val theID by document.gettingElementById

To access an element of specific type, just add it to the property declaration

val theID : HTMLImageElement by document.gettingElementById

see for more details: https://youtrack.jetbrains.com/issue/KT-32552

[jonnyzzz]

Also reported in https://github.com/JetBrains/kotlin/pull/2458