feat: Policy (#79)

* policy added

* Make it executable

* Make it executable, corrections

* password age policy added

* password lockout policy added

* corrections

* policy added

* Make it executable

* Make it executable, corrections

* password age policy added

* password lockout policy added

* corrections

* fix(repository): remove second policy

* complaints corrected

* Init tests

* add some tests

* more tests added

* systemfefaults added

* default values load added

* check for default value added

* fixes

* fixed

* create policy if not exists

* eventstore tests added

Co-authored-by: adlerhurst <silvan.reusser@gmail.com>

internal/policy/repository/eventsourcing/cache_age.go

@@ -0,0 +1,20 @@
+package eventsourcing
+
+import (
+	"github.com/caos/logging"
+)
+
+func (c *PolicyCache) getAgePolicy(id string) (policy *PasswordAgePolicy) {
+	policy = new(PasswordAgePolicy)
+	if err := c.policyCache.Get(id, policy); err != nil {
+		logging.Log("EVENT-NqMFM").WithError(err).Debug("error in getting cache")
+	}
+	return policy
+}
+
+func (c *PolicyCache) cacheAgePolicy(policy *PasswordAgePolicy) {
+	err := c.policyCache.Set(policy.AggregateID, policy)
+	if err != nil {
+		logging.Log("EVENT-6vRvM").WithError(err).Debug("error in setting policy cache")
+	}
+}