feat(network): implement peer discovery features and UI integration

Added functionality for peer discovery, including new API endpoints for listing, approving, and rejecting discovered peers. Updated the network queries and settings to support peer discovery configurations. Enhanced the UI to display discovered peers and integrated related settings in the tenant settings component. Updated OpenAPI documentation to reflect the new endpoints and parameters. This improves the network management capabilities by allowing dynamic peer discovery and management.

migrations/sqlite/000031_peer_discovery.down.sql

@@ -0,0 +1,4 @@
+DROP INDEX IF EXISTS idx_bgp_peer_discovery_tenant_neighbor_asn;
+DROP INDEX IF EXISTS idx_bgp_peer_discovery_tenant_neighbor_id;
+DROP INDEX IF EXISTS idx_bgp_peer_discovery_tenant_status;
+DROP TABLE IF EXISTS bgp_peer_discovery;

migrations/sqlite/000031_peer_discovery.up.sql

@@ -0,0 +1,30 @@
+-- Peer auto-discovery pending / rejected / approved records.
+
+CREATE TABLE IF NOT EXISTS bgp_peer_discovery (
+    id               TEXT PRIMARY KEY NOT NULL,
+    tenant_id        TEXT NOT NULL REFERENCES tenant (id) ON DELETE CASCADE,
+    speaker_id       TEXT REFERENCES bgp_speaker (id) ON DELETE SET NULL,
+    neighbor_id      TEXT NOT NULL DEFAULT '',
+    neighbor         TEXT NOT NULL,
+    remote_asn       INTEGER NOT NULL DEFAULT 0,
+    protocol_name    TEXT NOT NULL DEFAULT '',
+    session_state    TEXT NOT NULL DEFAULT '',
+    status           TEXT NOT NULL DEFAULT 'pending',
+    first_seen_at    TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
+    last_seen_at     TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
+    approved_peer_id TEXT REFERENCES bgp_peer (id) ON DELETE SET NULL,
+    created_at       TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
+    updated_at       TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
+    CHECK (status IN ('pending', 'approved', 'rejected'))
+);
+
+CREATE INDEX IF NOT EXISTS idx_bgp_peer_discovery_tenant_status
+    ON bgp_peer_discovery (tenant_id, status);
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_bgp_peer_discovery_tenant_neighbor_id
+    ON bgp_peer_discovery (tenant_id, neighbor_id)
+    WHERE neighbor_id != '';
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_bgp_peer_discovery_tenant_neighbor_asn
+    ON bgp_peer_discovery (tenant_id, neighbor, remote_asn)
+    WHERE neighbor_id = '';