Reduce packaged size of extensions (#4300)

* reduce output of notebooks

* reduce size of azurecore

* update mssql extensions to be webpacked

* formatting

* remove commented code

* fix packaged config

* fix mssql packing

extensions/shared.webpack.config.js

@@ -51,6 +51,8 @@ module.exports = function withDefaults(/**@type WebpackConfig*/extConfig) {
 		},
 		externals: {
 			'vscode': 'commonjs vscode', // ignored because it doesn't exist
+			'azdata': 'commonjs azdata',
+			'sqlops': 'commonjs sqlops'
 		},
 		output: {
 			// all output goes into `dist`.