[MD] Save and Edit page input validation

[noCharger]

Description:
In the save and edit credential page, we need to do input validation and show inline message to give user information for guiding.

[KrooshalUX]

General guidance:
If any field is missing a value or otherwise contains an error, the submit button should remain in disabled state
Do not check for values onFocus

Credential Title Field (1)

• onBlur & onChange - check for any value. If blank, display inline error
• Preferably onBlur & onChange (vs onSubmit) - check if value exists as a credential title object. If the value is not unique, display inline error (this may not be part of P0)

Credential Description (2)

• onBlur & onChange - check for any value. If blank, display inline error

Username (4)

• onBlur & onChange - check for any value. If blank, display inline error

Password (5)

• onBlur & onChange - check for any value. If blank, display inline error

onSubmit:

• check for unique value in Title field. If the value is not unique, present user with an inline error as well as a Callout Error below the page description before the form
• Return user scroll position to top
• check for any disallowed characters in Credential Title and Credential Description (unsure if necessary, please verify)
• listen for onChange on all fields in error to change submission button state from danger to default