Use Snowpack for web module management.

Change-Id: Id4ed0471166cfe82caeca7b5e8b53c9ef1765d66
diff --git a/.gitignore b/.gitignore
index 01163f7..1442829 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,3 +43,4 @@
 
 # Yarn
 node_modules
+web_modules