AppArmor Language Server

This is a language server for AppArmor profiles, which provides features such
as code completion, linting, and diagnostics for AppArmor profiles. It is
designed to be used with editors that support the Language Server Protocol
(LSP), such as VS Code, Vim, and Emacs.

Also includes standalone apparmor-lint and apparmor-format commands to
lint and format individual profiles - useful in CI / pre-commit hooks etc.

NOTE: the system-backup interface must be connected for accurate filesystem
path completions. After installation, run:

sudo snap connect apparmor-language-server:system-backup