[#48] Appending reset ANSI control sequences char after printing field value

[DK318]

Description

Problem

Field contents may contain ANSI control sequences and they can affect other fields.

Solution

Wrapped field value in newtype FieldValue and created the Buildable instance for it which appends reset ANSI control sequences char to field value.

Related issue(s)

• Fixes #48

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[MagicRB]

I would compeletely disallow ANSI sequences in field values but this looks ok i guess, only danger is that an attacker can aribtrarily affect the user's terminal, but the code itself LGTM