Rename `note` to `notification` throughout the codebase wherever necessary#1353

ahoppen merged 2 commits intoswiftlang:mainswiftlang/sourcekit-lsp:mainfrom

lokesh-tr:rename-note-to-notification-wherever-necessarylokesh-tr/sourcekit-lsp:rename-note-to-notification-wherever-necessaryCopy head branch name to clipboard