feat: add management for ldap idp template (#5220)

Add management functionality for LDAP idps with templates and the basic functionality for the LDAP provider, which can then be used with a separate login page in the future.

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

internal/command/idp.go

@@ -0,0 +1,17 @@
+package command
+
+import "github.com/zitadel/zitadel/internal/repository/idp"
+
+type LDAPProvider struct {
+	Name                string
+	Host                string
+	Port                string
+	TLS                 bool
+	BaseDN              string
+	UserObjectClass     string
+	UserUniqueAttribute string
+	Admin               string
+	Password            string
+	LDAPAttributes      idp.LDAPAttributes
+	IDPOptions          idp.Options
+}