[management] network map from nmap data type (#6919)

Signed-off-by: Dmitri Dolguikh <dmitri.external@netbird.io>
Co-authored-by: Dmitri Dolguikh <dmitri.external@netbird.io>

management/internals/network_map_db/pgsql/peer.go

@@ -0,0 +1,34 @@
+package networkmap_pgsql
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+	networkmapdb "github.com/netbirdio/netbird/management/internals/network_map_db"
+	"github.com/netbirdio/netbird/shared/management/networkmap/nmdata"
+)
+
+const (
+	GetPeersQuery = `
+	select id, key, ssh_key, dns_label, extra_dns_labels, user_id, ssh_enabled, login_expiration_enabled, last_login, ip, ipv6,
+	peer_status_requires_approval, peer_status_connected, proxy_meta_embedded, proxy_meta_cluster,
+	meta_wt_version, meta_go_os, meta_os_version, meta_kernel_version, meta_network_addresses, meta_files, meta_capabilities, meta_flags, meta_sync_message_version,
+	location_country_code, location_city_name, location_connection_ip
+	from peers
+	where account_id = $1
+	`
+)
+
+func (pgc *PgStoreConn) GetPeers(ctx context.Context, accountId string) ([]nmdata.Peer, map[string][]*nmdata.Peer, error) {
+	rows, err := pgc.Conn.Query(ctx, GetPeersQuery, accountId)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	peers, err := pgx.CollectRows(rows, pgx.RowToStructByName[networkmapdb.Peer])
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return networkmapdb.ConvertToNmdataPeers(peers)
+}