Add --model flag completion

pkg/lmcli/lmcli.go

@@ -42,6 +42,16 @@ func NewContext() (*Context, error) {
 	return &Context{*config, s, hl}, nil
 }
 
+func (c *Context) GetModels() (models []string) {
+	for _, m := range *c.Config.Anthropic.Models {
+		models = append(models, m)
+	}
+	for _, m := range *c.Config.OpenAI.Models {
+		models = append(models, m)
+	}
+	return
+}
+
 func (c *Context) GetCompletionProvider(model string) (provider.ChatCompletionClient, error) {
 	for _, m := range *c.Config.Anthropic.Models {
 		if m == model {