Added PSR environment variable for drawing a string on the right side of the prompt

Pending normal mode sequences are now shown in the top right of the prompt

.gitignore

@@ -8,27 +8,14 @@ target
 default.nix
 shell.nix
 *~
-TODO.md
-AUDIT.md
-KNOWN_ISSUES.md
 rust-toolchain.toml
 /ref
-
-# cachix tmp file
 store-path-pre-build
-
-# Devenv
 .devenv*
 devenv.local.nix
-
-# direnv
 .direnv
-
-# pre-commit
 .pre-commit-config.yaml
-
 template/flake.lock
 ideas.md
 roadmap.md
-README.md
 file*