db(identity_provider): adding identity_provider table to new relational model

backend/v3/storage/database/dialect/postgres/migration/003_id_providers_table/down.sql

@@ -0,0 +1,3 @@
+DROP TABLE zitadel.identity_providers;
+DROP Type zitadel.idp_state;
+DROP Type zitadel.idp_type;

backend/v3/storage/database/dialect/postgres/migration/003_id_providers_table/up.sql

@@ -0,0 +1,52 @@
+CREATE TYPE idp_state AS ENUM (
+    'active',
+    'inactive'
+);
+
+CREATE TYPE idp_type AS ENUM (
+    'oidc',
+    'oauth',
+    'saml',
+    'ldap',
+    'github',
+    'google',
+    'microsoft',
+    'apple'
+);
+
+CREATE TABLE identity_providers (
+    instance_id TEXT NOT NULL
+    , org_id TEXT
+    , id TEXT NOT NULL
+    , state idp_state NOT NULL DEFAULT 'active'
+    , name TEXT
+    , type idp_type NOT NULL
+    , allow_creation BOOLEAN NOT NULL DEFAULT TRUE
+    , allow_auto_creation BOOLEAN NOT NULL DEFAULT TRUE
+    , allow_auto_update BOOLEAN NOT NULL DEFAULT TRUE
+    , allow_linking BOOLEAN NOT NULL DEFAULT TRUE
+    , styling_type SMALLINT
+    , payload JSONB
+    
+    , created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    , updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    , deleted_at TIMESTAMPTZ
+    
+    , PRIMARY KEY (instance_id, id)
+    , CONSTRAINT identity_providers_unique UNIQUE NULLS NOT DISTINCT (instance_id, org_id, id)
+    , FOREIGN KEY (instance_id) REFERENCES instances(id)
+    , FOREIGN KEY (instance_id, org_id) REFERENCES organizations(instance_id, id)
+);
+
+-- CREATE INDEX idx_identity_providers_org_id ON identity_providers(instance_id, org_id) WHERE org_id IS NOT NULL;
+CREATE INDEX idx_identity_providers_state ON identity_providers(instance_id, state);
+CREATE INDEX idx_identity_providers_type ON identity_providers(instance_id, type);
+-- CREATE INDEX idx_identity_providers_created_at ON identity_providers(created_at);
+-- CREATE INDEX idx_identity_providers_deleted_at ON identity_providers(deleted_at) WHERE deleted_at IS NOT NULL;
+
+
+CREATE TRIGGER trigger_set_updated_at
+BEFORE UPDATE ON zitadel.identity_providers
+FOR EACH ROW
+WHEN (OLD.updated_at IS NOT DISTINCT FROM NEW.updated_at)
+EXECUTE FUNCTION zitadel.set_updated_at();