add send email (registration);

[Guts088737]

add send email (registration);
fix dataofbirthpicker issues;
fix errors with pop-up when repeat to click the submit button; add profession selections;
fix email or password error messages

[github-actions]

❌ npm build failed

Failed to compile.

./src/views/RegisterClinician.tsx
80:11  Error: Expected newline before return statement.  newline-before-return
87:11  Error: Expected newline before return statement.  newline-before-return
102:11  Error: Expected newline before return statement.  newline-before-return
115:11  Error: Expected newline before return statement.  newline-before-return

./src/views/RegisterPatient.tsx
95:11  Error: Expected newline before return statement.  newline-before-return
103:11  Error: Expected newline before return statement.  newline-before-return

./src/views/RegisterResearcher.tsx
139:11  Error: Expected newline before return statement.  newline-before-return
146:11  Error: Expected newline before return statement.  newline-before-return
162:9  Error: Expected newline before return statement.  newline-before-return
202:9  Error: Expected newline before return statement.  newline-before-return

info  - Need to disable some ESLint rules? Learn more here: https://nextjs.org/docs/app/api-reference/config/eslint#disabling-rules

[minjnlgc]

lgtm