Refactor: Replace custom charts with Vico library (#4348)

Signed-off-by: James Rich <2199651+jamesarich@users.noreply.github.com>

core/model/src/main/kotlin/org/meshtastic/core/model/NeighborInfo.kt

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2025-2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.model
+
+import org.meshtastic.proto.MeshProtos
+
+val MeshProtos.MeshPacket.neighborInfo: MeshProtos.NeighborInfo?
+    get() =
+        if (hasDecoded() && decoded.portnumValue == 71) { // NEIGHBORINFO_APP_VALUE = 71
+            runCatching { MeshProtos.NeighborInfo.parseFrom(decoded.payload) }.getOrNull()
+        } else {
+            null
+        }
+
+fun MeshProtos.NeighborInfo.getNeighborInfoResponse(
+    getUser: (nodeNum: Int) -> String,
+    header: String = "Neighbors:",
+): String = buildString {
+    append(header)
+    append("\n\n")
+    if (neighborsList.isEmpty()) {
+        append("No neighbors reported.")
+    } else {
+        neighborsList.forEach { n ->
+            append("• ")
+            append(getUser(n.nodeId))
+            append(" (SNR: ")
+            append(n.snr)
+            append(")\n")
+        }
+    }
+}
+
+fun MeshProtos.MeshPacket.getNeighborInfoResponse(
+    getUser: (nodeNum: Int) -> String,
+    header: String = "Neighbors:",
+): String? = neighborInfo?.getNeighborInfoResponse(getUser, header)