Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kf6-kcodecs/source/src/kcodecsbase45.cpp

@@ -0,0 +1,44 @@
+
+/*
+    SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "kcodecs.h"
+#include "kcodecs_debug.h"
+
+#include <QDebug>
+
+static constexpr const char base45Table[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:";
+
+static uint8_t base45MapFromChar(char c)
+{
+    const auto it = std::find(std::begin(base45Table), std::end(base45Table), c);
+    if (it == std::end(base45Table)) {
+        qCWarning(KCODECS_LOG) << "invalid base45 character:" << c;
+        return 0;
+    }
+    return std::distance(std::begin(base45Table), it);
+}
+
+QByteArray KCodecs::base45Decode(QByteArrayView in)
+{
+    QByteArray out;
+    out.reserve(((in.size() / 3) + 1) * 2);
+
+    for (qsizetype i = 0; i + 1 < in.size(); i += 3) {
+        uint32_t n = base45MapFromChar(in[i]) + base45MapFromChar(in[i + 1]) * 45;
+        if (i + 2 < in.size()) {
+            n += 45 * 45 * base45MapFromChar(in[i + 2]);
+            out.push_back(n >> 8);
+        } else {
+            if (n >> 8) {
+                out.push_back(n >> 8);
+            }
+        }
+        out.push_back(n % 256);
+    }
+
+    return out;
+}