Test hovers and problems peek widget

[sandy081]

Ref #67076

• any @Tyriar (Windows)
• any @weinand (macOS)

Complexity: 3

Following improvements are done to the hovers

• Made them wider so that the hover messages are shown nicely without wrapping.
• Related information links in the problem hover are now shown without bullet points.
• Added a status bar to the problem hover that contains Peek Problem and Quick Fixes action. Test them if they are working as expected.

Following improvements are done to Peek problems widget

• You can now navigate problem peeks using the actions in the header of the peek.
• Test that problem peek and hover are consistent.

You can use following code sample to generate errors

interface Foo {

	bar(): string;

}

interface Foo1 extends Foo {

	bar(): number;

}

class FooBar implements Foo {

	private _notDefinedVaar: string;

	bar(): string {
		return this._notDefinedVar;
	}

}