Initial commit: gtea CLI tool

Go CLI that wraps the Gitea API and git to create repos, commit,
push, and pull without leaving the terminal.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

go.mod

@@ -0,0 +1,18 @@
+module gtea
+
+go 1.21
+
+require (
+	code.gitea.io/sdk/gitea v0.19.0
+	github.com/spf13/cobra v1.8.0
+)
+
+require (
+	github.com/davidmz/go-pageant v1.0.2 // indirect
+	github.com/go-fed/httpsig v1.1.0 // indirect
+	github.com/hashicorp/go-version v1.6.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/crypto v0.22.0 // indirect
+	golang.org/x/sys v0.19.0 // indirect
+)