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/eventstore.go

@@ -0,0 +1,38 @@
+package eventsourcing
+
+import (
+	"github.com/caos/zitadel/internal/cache/config"
+	sd "github.com/caos/zitadel/internal/config/systemdefaults"
+	es_int "github.com/caos/zitadel/internal/eventstore"
+	"github.com/caos/zitadel/internal/policy"
+	"github.com/sony/sonyflake"
+)
+
+var idGenerator = sonyflake.NewSonyflake(sonyflake.Settings{})
+
+type PolicyEventstore struct {
+	es_int.Eventstore
+	policyCache                     *PolicyCache
+	passwordAgePolicyDefault        policy.PasswordAgePolicyDefault
+	passwordComplexityPolicyDefault policy.PasswordComplexityPolicyDefault
+	passwordLockoutPolicyDefault    policy.PasswordLockoutPolicyDefault
+}
+
+type PolicyConfig struct {
+	es_int.Eventstore
+	Cache *config.CacheConfig
+}
+
+func StartPolicy(conf PolicyConfig, systemDefaults sd.SystemDefaults) (*PolicyEventstore, error) {
+	policyCache, err := StartCache(conf.Cache)
+	if err != nil {
+		return nil, err
+	}
+	return &PolicyEventstore{
+		Eventstore:                      conf.Eventstore,
+		policyCache:                     policyCache,
+		passwordAgePolicyDefault:        systemDefaults.DefaultPolicies.Age,
+		passwordComplexityPolicyDefault: systemDefaults.DefaultPolicies.Complexity,
+		passwordLockoutPolicyDefault:    systemDefaults.DefaultPolicies.Lockout,
+	}, nil
+}