refactor: rename SolaceScanScout to Solace and update related configurations

- Updated branding from "SolaceScanScout" to "Solace" across various files including deployment scripts, API responses, and documentation.
- Changed default base URL for Playwright tests and updated security headers to reflect the new branding.
- Enhanced README and API documentation to include new authentication endpoints and product access details.

This refactor aligns the project branding and improves clarity in the API documentation.

deployment/DEPLOYMENT_CHECKLIST.md

@@ -54,7 +54,7 @@ Use this checklist to track deployment progress.
 - [ ] Systemd service files created:
   - [ ] `explorer-indexer.service`
   - [ ] `explorer-api.service`
-  - [ ] `explorer-frontend.service`
+  - [ ] `solacescanscout-frontend.service`
 - [ ] Services enabled
 - [ ] Services started
 - [ ] Service status verified
@@ -201,4 +201,3 @@ _Use this space for deployment-specific notes and issues encountered._
 **Deployed By**: _______________
 **Container ID**: _______________
 **Domain**: explorer.d-bis.org
-