feat: support separate knowledge bases for each agent

Also allow to export/import KB

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

agent/agent.go

@@ -45,6 +45,7 @@ type RAGDB interface {
 	Store(s string) error
 	Reset() error
 	Search(s string, similarEntries int) ([]string, error)
+	Count() int
 }
 
 func New(opts ...Option) (*Agent, error) {
@@ -235,6 +236,10 @@ func (a *Agent) Paused() bool {
 	return a.pause
 }
 
+func (a *Agent) Memory() RAGDB {
+	return a.options.ragdb
+}
+
 func (a *Agent) runAction(chosenAction Action, params action.ActionParams) (result string, err error) {
 	for _, action := range a.systemInternalActions() {
 		if action.Definition().Name == chosenAction.Definition().Name {