Improve signature tag edition in DevStudio

[Arthoni]

By using advanced widgets
Based on structure:

For ware tags:

• Known categories (domain::/process::/method::)

For issue tags:

• Known types: (type::bug, type::feature, type::review)
• Known urgency (urgency::low, urgency::normal, urgency::high)

Allow extensibility of suggested tags based on structure customizable by user (similar to Gitlab issue tags)