Add `@tool_button` annotation for easily creating inspector buttons. #8599

Add `@tool_button` annotation for easily creating inspector buttons.

Usage Workflow file

10 warnings

'RichTextLabel.TextDirection' hides inherited member 'Control.TextDirection'. Use the new keyword if hiding was intended.

'ArrayMesh.BlendShapeMode' hides inherited member 'Mesh.BlendShapeMode'. Use the new keyword if hiding was intended.

'Button.TextDirection' hides inherited member 'Control.TextDirection'. Use the new keyword if hiding was intended.

'TextEdit.TextDirection' hides inherited member 'Control.TextDirection'. Use the new keyword if hiding was intended.

'GltfAccessor.GetType()' hides inherited member 'object.GetType()'. Use the new keyword if hiding was intended.

'GltfAccessor.MethodName.GetType' hides inherited member 'object.GetType()'. Use the new keyword if hiding was intended.

'GraphNode.TextDirection' hides inherited member 'Control.TextDirection'. Use the new keyword if hiding was intended.

'Label.TextDirection' hides inherited member 'Control.TextDirection'. Use the new keyword if hiding was intended.

'LineEdit.TextDirection' hides inherited member 'Control.TextDirection'. Use the new keyword if hiding was intended.

'LinkButton.TextDirection' hides inherited member 'Control.TextDirection'. Use the new keyword if hiding was intended.