feature/1129 integrate webauthn controller

[prnk28]

• refactor: remove nebula static file serving
• feat: Add login, register, and authorize sections
• feat: implement registration form UI
• refactor: abstract template rendering to ctx module
• feat: add deployment target for Highway gateway
• feat: migrate Highway gateway to Cloudflare Workers
• feat: refactor nebula routes to components
• chore(deps): remove unused dependencies
• chore(deps): remove unused dependencies
• feat: add user and relaying party entities
• refactor: remove unused imports
• feat: add motion scale-in and opacity-in animations
• refactor: move dwn and orm packages to internal
• refactor: update imports to use relative paths
• refactor: rename build targets for clarity
• feat: add RelayingPartyEntity model
• refactor: rename creds templates to credentials
• refactor: remove unused entity model
• refactor: move models to internal package
• refactor: move models package to internal/orm
• feat: implement broadcast channel context
• feat: remove config upload step
• feat: remove unused configuration files
• feat: migrate authentication logic to workers
• feat: remove cloudflared dependency
• refactor: move client related routes to 'routes/client.go'
• feat: implement macaroon middleware
• refactor: move fetch package to cmd/motr
• feat: remove auth and grant endpoints
• docs: add conceptual descriptions to did module

_{Huly®: ENG-1057}