Add error behaviour when empty string

[aidamag]

• Add error behaviour when empty string in select component #831
• Add error behaviour when empty string in text input component #840
• Add error behaviour when empty string in textarea component #833
• Add error behaviour when empty string in number input component #837
• Add error behaviour when empty string in password input component #838
• Add error behaviour when empty string in date input component #839
• Add error behaviour when empty string in radio group component #835