chore: add Cypress artifacts to .gitignore

- Add cypress/screenshots/, cypress/videos/, and cypress/downloads/ to .gitignore
- Remove existing Cypress artifacts from git tracking
- Prevents test artifacts from being committed to version control

Author: josegomez-dev

.gitignore

@@ -90,6 +90,11 @@ jspm_packages/
 tmp/
 temp/
 
+# Cypress artifacts
+cypress/screenshots/
+cypress/videos/
+cypress/downloads/
+
 # Stellar specific
 stellar-keys/
 *.key