Add jira CLI and gum tool. (#97)

Author: porridge

README.md

@@ -31,8 +31,10 @@ Applications:
 * `go-jsonnet` and bundler
 * `goreleaser`
 * `gradle`
+* `gum`
 * `helm`
 * `jq`
+* [`jira`](https://github.com/ankitpokhrel/jira-cli/)
 * `k9s`
 * `kind`
 * `kubectl`

flake.nix

@@ -119,6 +119,8 @@
                 git-absorb
                 gnumake
                 goreleaser
+                gum
+                jira-cli-go
                 jq
                 jsonnet-bundler
                 k9s