v4.0.0

• package.json: update dependency (@monaco-editor/loader) version to - v1.0.0
• hooks: create useMonaco hook
• lib: export (named) useMonaco from the entry file
• monaco: rename the main utility: monaco -> loader
• Editor/Diff: rename editorDidMount to onMount
• Editor/Diff: expose monaco instance from onMount as a second argument (first is the editor instance)
• Editor/Diff: add beforeMount prop: function with a single argument -> monaco instance
• Editor: add defaultModelPath prop, use it as a default model path
• Editor: add defaultValue prop and use it during default model creation
• Editor: add subscription (onChange prop) to listen default model content change
• Editor: remove _isControlledMode prop
• Diff: add originalModelPath and modifiedModelPath props, use them as model paths for original/modified models
• ControlledEditor: remove; the Editor component, now, handles both controlled and uncontrolled modes
• package.json: move prop-types to dependencies
• types: fix types according to changed
• Editor: add onValidate prop: an event emitted when the length of the model markers of the current model isn't 0