fix(nix): pkg-config and openssl in package inputs

chore(nix): update flake

feat: alertmanager webhook route

feat: route helpers

feat: separate routes to module

feat: email service

feat: return result from service new

feat: macro for creating service match

feat: per service config tests

feat: config defaults

feat: optionally render commonmark to html for matrix

fix(nix): create user in module

feat: optionally read tokens from files

feat: move token to header

chore: disable unused features, regen license.html

feat: nix updates, package and module

feat: switch to rustls from openssl

chore: comment styling

feat: add --dry-run

feat: use cargo-about to generate a license page