[DEV] [PLUGIN] Refactoring Comparison Functionality

[Sevhena]

1. When users press the refactor smell button, the vs code editor should open up to show the old code + the new code (similar to a merge conflict)
2. It should also show the energy statistics on how much energy the user is saving (show the initial vs. final emissions)
3. Allow users to accept/reject the change
4. If change is accepted, the new file should be present in the workspace
5. If change is not accepted then old file remains
6. This should work for changes that affect multiple files (once we get the issue resolved)

[Sevhena]

Made mistake referencing commits, so here are the links:

ssm-lab/capstone--sco-vs-code-plugin@7d6f5e7
ssm-lab/capstone--sco-vs-code-plugin@dc0a6c9
ssm-lab/capstone--sco-vs-code-plugin@61a39e7
ssm-lab/capstone--sco-vs-code-plugin@5cdba76
ssm-lab/capstone--sco-vs-code-plugin@8304af5
ssm-lab/capstone--sco-vs-code-plugin@123e04f

The above commits contribute to this issue.