feat: enhance DoH profile management and resolver policy in modules

- Added `DohResolverPolicy` schema to OpenAPI documentation, defining policies for domain resolution.
- Updated module handling to support multiple DoH profiles via `doh_profile_ids` and introduced `doh_resolver_policy` in the API.
- Refactored related functions to accommodate the new DoH profile structure, ensuring backward compatibility with existing `doh_profile_id`.
- Enhanced UI components to allow selection and management of DoH profiles and policies in the web interface.
- Updated database interactions to handle new fields and ensure proper data normalization.

internal/repository/postgres_module_doh.go

@@ -0,0 +1,67 @@
+package repository
+
+import (
+	"context"
+
+	"evobgp/internal/store"
+)
+
+func (p *Postgres) fillModuleDohFields(ctx context.Context, m *store.Module) error {
+	if m == nil {
+		return nil
+	}
+	rows, err := p.pool.Query(ctx, `
+		SELECT doh_profile_id::text
+		FROM module_doh_profile
+		WHERE module_id = $1
+		ORDER BY sort_order, doh_profile_id`, m.ID)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	var ids []string
+	for rows.Next() {
+		var id string
+		if err := rows.Scan(&id); err != nil {
+			return err
+		}
+		ids = append(ids, id)
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	m.DohProfileIDs = store.NormalizeDohProfileIDList(ids)
+	m.SyncLegacyDohProfileID()
+	return nil
+}
+
+func (p *Postgres) setModuleDohProfiles(ctx context.Context, moduleID string, ids []string) error {
+	ids = store.NormalizeDohProfileIDList(ids)
+	if _, err := p.pool.Exec(ctx, `DELETE FROM module_doh_profile WHERE module_id = $1`, moduleID); err != nil {
+		return err
+	}
+	for i, id := range ids {
+		if _, err := p.pool.Exec(ctx, `
+			INSERT INTO module_doh_profile (module_id, doh_profile_id, sort_order)
+			VALUES ($1, $2, $3)`, moduleID, id, i); err != nil {
+			return err
+		}
+	}
+	var dohArg any
+	if len(ids) > 0 {
+		dohArg = ids[0]
+	}
+	_, err := p.pool.Exec(ctx, `UPDATE module SET doh_profile_id = $2, updated_at = now() WHERE id = $1`, moduleID, dohArg)
+	return err
+}
+
+func (p *Postgres) moduleDohProfileInUse(ctx context.Context, dohProfileID string) (bool, error) {
+	var n int
+	if err := p.pool.QueryRow(ctx, `
+		SELECT COUNT(*) FROM module_doh_profile mdp
+		JOIN module m ON m.id = mdp.module_id
+		WHERE mdp.doh_profile_id = $1::uuid AND m.deleted_at IS NULL`, dohProfileID).Scan(&n); err != nil {
+		return false, err
+	}
+	return n > 0, nil
+}