Update .gitignore to include additional node_modules directories and Maven target directory. Ensure Cypress downloads directory is properly ignored.

Author: mossy426-cdc

.gitignore

@@ -8,6 +8,8 @@
 # dependencies
 /node_modules
 /node_modules_dev
+/node_modules_classic
+/node_modules_ang
 /dev_node_modules
 /Hantavirus_Testing
 
@@ -65,4 +67,7 @@ slr_linux.tgz
 .scignore
 
 cypress/screenshots/*
-cypress/downloads/*
+cypress/downloads/*
+
+# Maven
+target/