OH2-218 Show remaining characters on text fields

[SilverD3]

See OH2-218.

I've identified following forms :

• Patient form (/patients/new)
• Patient search form (/patients/search)
• Admission form (/patients/details/{id}/admissions)
• Visit form (/patients/details/{id}/visits)
• Triage form (/patients/details/{id}/triage)
• Operation form (/patients/details/{id}/operation)
• Discharge form (/patients/details/{id}/discharge)
• Lab form (/laboratory/new)

I've modified the custom TextField component (src/components/accessories/textField/TextField.tsx). To use the feature, just specify the prop maxLength on that component.

[mwithi]

LGTM. Thanks a lot!