feat: CNX-9627 Merge data connector and visual into the same repo

[AlanRynne]

• Adds 2.19 visual code from commit 0f034c17d04acd3fa5130a91779576efde7793a9 into repo
• Organises repo code into src/ folder, with one subfolder per "package"
• Adds vscode workspace to prevent having to consolidate launch.json and task.json for each repo (we can revisit this if need be)
• Updates installer to reflect new Bin folder path.