Add typed web part snippets

[SubPointSupport]

As Add M2XXX snippets #8, there should be snippets for the typed web parts as well.

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• [TODO] ClientWebPartDefinition
• [TODO] ContentEditorWebPartDefinition
• [TODO] ListViewWebPartDefinition
• [TODO] PageViewerWebPartDefinition
• [TODO] ScriptEditorWebPartDefinition
• [TODO] ClientWebPartDefinition
• [TODO] SilverlightWebPartDefinition
• [TODO] UserCodeWebPartDefinition.
• [TODO] XsltListViewWebPartDefinition
• [TODO] ClientWebPartDefinition
• [TODO] ClientWebPartDefinition

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• [TODO] ContactFieldControlDefinition
• [TODO] ContentByQueryWebPartDefinition
• [TODO] ContentBySearchWebPartDefinition
• [TODO] ProjectSummaryWebPartDefinition
• [TODO] RefinementScriptWebPartDefinition
• [TODO] ResultScriptWebPartDefinition
• [TODO] SiteFeedWebPartDefinition
• [TODO] SummaryLinkWebPartDefinition
  .