fix: add delta theming for Link

[InnaAtanasova]

Related Issue

Part of #1357

Description

Adds delta theming for Link.

Please check whether the PR fulfills the following requirements

1. The output matches the design specs

• [na] All values are in rem
• [na] Text elements follow the truncation rules
• hover state of the element follow design spec
• focus state of the element follow design spec
• active state of the element follow design spec
• selected state of the element follow design spec
• selected hover state of the element follow design spec
• pressed state of the element follow design spec
• [na] Responsiveness rules - the component has modifier classes for all breakpoints
• [na] Includes Compact/Cosy/Tablet design
• [na] RTL support

2. The code follows fundamental-styles code standards and style
   NA
3. Testing
   NA
4. Documentation
   NA

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