CoreUI v5.5 for Angular 20 - free admin template

• chore(dependencies): update to Angular 20
  • update @angular/* to ^20.0.x
  • update typescript to ~5.8.3
  • move @angular/localize to dependencies for use at runtime
  • update @coreui/angular to ~5.5.1
  • update @coreui/angular-chartjs to ~5.5.1
  • update @coreui/icons-angular to ~5.5.1
  • update moduleResolution to bundler in TypeScript configurations
  • migrate application project to the new build system with application builder
  • update imports of DOCUMENT from @angular/common to @angular/core
  • update Node.js version list to the supported versions
• fix(dashboard): TS2307: Cannot find module chart.js/dist/types/utils or its corresponding type declarations. [plugin angular-compiler] - tempfix
• refactor: migrate to inject function (remove constructor-based dependency injection)
• refactor(toasters): use ComponentRef setInput() api
• refactor: migration to signal inputs, host bindings, cleanups
• refactor: migration to signal queries
• fix(mainChart): chart.js - Cannot read properties of undefined _clip (reading 'disabled') - fixed by stop() current animations
• test: remove deprecated RouterTestingModule, use provideRouter() instead
• refactor: migration to lazy-loaded routes
• refactor: migration to self-closing tags

Full Changelog: 5.4.6...5.5.1