Add cypress and necessary configs

.eslintrc.cjs

.gitignore

client/README.md

client/cypress.config.ts

client/cypress/.eslintrc.json

client/cypress/Test-References.md

client/cypress/e2e/auth/auth.cy.ts

client/cypress/e2e/register/register.cy.ts

client/package.json

client/src/components/Header.tsx

client/src/pages/Login.tsx

client/src/pages/Registration.tsx

client/tsconfig.json

client/tsconfig.node.json

package-lock.json

package.json