add(repository): discover repository informations

This implemtation determines the git remote origin url and extracts the
information for the owner and repo names for the api url's. WIP for #2.

cmd/gitw/main.go

@@ -5,11 +5,26 @@ import (
 	"os"
 
 	"gitea.yves-biener.de/yves-biener/gitwarrior/internal/gitea"
+	"gitea.yves-biener.de/yves-biener/gitwarrior/internal/gitw"
 )
 
 func main() {
-	repository := gitea.NewRepository("gitwarrior", "yves-biener")
+	// TODO: server url may be also be derived from the git configuration?
 	server := gitea.NewGitea("https://gitea.yves-biener.de")
+
+	repository, err := gitw.Discover()
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(-1)
+	}
+	repository, err = server.VerifyRepository(repository)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(-1)
+	}
+	fmt.Printf("%#v\n", repository)
+	fmt.Println("---")
+
 	issue, err := server.GetIssue(repository, 1)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, err)