testing/wezterm: add missing files, link against system libraries, split out terminfo, fix test
- link against system libraries
- add missing LICENSE, shell integration script, strip-ansi-escapes executable
- split out terminfo into subpackage
- build each executable separetely due to how cargo works
- replace patch for Cargo with envvars
- don't print malformed sshd config as it can fail on builders
Signed-off-by: Jakub Panek me@panekj.dev