Add categories to package.json to ensure the extension shows up prominently in the market place
Add categories to package.json to ensure the extension shows up prominently in the market place

caslan/omnisharp-vscode,seraku24/omnisharp-vscode,OmniSharp/omnisharp-vscode,OmniSharp/omnisharp-vscode,caslan/omnisharp-vscode,OmniSharp/omnisharp-vscode,gregg-miskelly/omnisharp-vscode,gregg-miskelly/omnisharp-vscode,seraku24/omnisharp-vscode,OmniSharp/omnisharp-vscode,gregg-miskelly/omnisharp-vscode,OmniSharp/omnisharp-vscode,gregg-miskelly/omnisharp-vscode,caslan/omnisharp-vscode