QoL update

What's Changed

• web: add link & version to footer by @vanadium23 in #12
• infra: single binary distribution by @vanadium23 in #14
• docs: add railway template to deploy kompanion by @vanadium23 in #15

security updates:

• build(deps): bump golang.org/x/crypto from 0.23.0 to 0.31.0 by @dependabot in #16
• build(deps): bump golang.org/x/net from 0.22.0 to 0.33.0 by @dependabot in #17
• build(deps): bump golang.org/x/image from 0.0.0-20210216034530-4410531fe030 to 0.18.0 by @dependabot in #18

Full Changelog: v0.0.1...v0.0.2