feat: enable use of relative addresses in config yaml

[SaxenaAnushka102]

Description

For now, if a user wants to use dcr, they have to mention the full reference of the address to refer to a certain address on the address graph, which is not user-friendly. We should enable relative addressing in yaml, and the full address is to be calculated using the yaml scopes.

Closes: #33

Describe the changes you've made

I made changes to the collaboration/config package. Modified the parseTransformationSpec and parseDestinationSpec functions.

Checklist:

• [x] My code follows the style guidelines of this project.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] Does this code have any breaking changes?
• [x] Does this code have any yaml schema changes?

[qascade]

Also, change your branch frommain to feat.relative_address. You should not make commits directly to main branch as you will not be able to revert back changes easily if something goes wrong.