Reduce VSIX size (#972)

Author: isc-bsaviano

.vscodeignore

@@ -1,16 +1,16 @@
-# Run 'vsce ls' to verify that the following lines exclude everything not needed
-# in the VSIX. It used to be possible to use a whitelisting technique here
-# but [email protected] broke it (see https://github.com/microsoft/vscode-vsce/issues/576)
+# Run 'vsce ls' to verify that the following lines exclude everything not needed in the VSIX.
 
-/*
-!/dist
-/dist/*.map
-!/images
-!/snippets
-!/syntaxes
+**
+!dist/*.js
+!dist/*.txt
+!snippets/
+!images/
+!syntaxes/
+!webview/
 !CHANGELOG.md
-!language-configuration-class.jsonc
-!language-configuration.json
 !LICENSE
+!README.md
 !package.json
-!README.md
+!package.nls.json
+!language-configuration.json
+!*.jsonc