feat(planning): enable agent planning (#68)

* feat(planning): Allow the agent to plan subtasks

Signed-off-by: mudler <mudler@localai.io>

* feat(planning): enable planning toggle in the webui

Signed-off-by: mudler <mudler@localai.io>

* feat(planning): take in consideration the overall goal

Signed-off-by: mudler <mudler@localai.io>

* Update core/action/plan.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Signed-off-by: mudler <mudler@localai.io>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

core/agent/agent_test.go

@@ -36,6 +36,10 @@ type TestAction struct {
 	response map[string]string
 }
 
+func (a *TestAction) Plannable() bool {
+	return true
+}
+
 func (a *TestAction) Run(c context.Context, p action.ActionParams) (action.ActionResult, error) {
 	for k, r := range a.response {
 		if strings.Contains(strings.ToLower(p.String()), strings.ToLower(k)) {