Enhance and improve messages

[emsifa]

Added:

• Method Helper::join to join array of string with given separator and last separator.
• Method Helper::wraps to wraps array of string with given prefix and suffix.
• Trait Rakit\Validation\Traits\TranslationsTrait contains setter and getter translations.
• Method Rule::setParameterText to set custom parameter text that used in invalid message.
• Method Rule::getParametersTexts to get custom parameters texts.

Changed:

• Rakit\Validation\Validator class uses Rakit\Validation\Traits\TranslationTrait.
• Rakit\Validation\Validation class uses Rakit\Validation\Traits\TranslationTrait.
• Validator::make also set translations from Validator instance into Validation instance.
• Rule in invalid message.
• Rule not_in invalid message.
• Rule mimes invalid message.
• Rule uploaded_file invalid message.