Moving to QT6: Read more

QT6 Apparently means a lot of changes, these are the changes I've
found to make at least CPP build. The problem is we just got rid of a
lot of CPP and I don't know if the application will work. On the other
hand, the QML isn't finished yet either, but this is the start of
updating the application for QT6 and using MpvQt which is being built
and maintained by KDE. This will be better as they'll keep the library
updated for future QT updates so long as I still track with Kirigami.

flake.lock

@@ -23,11 +23,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1698420672,
-        "narHash": "sha256-/TdeHMPRjjdJub7p7+w55vyABrsJlt5QkznPYy55vKA=",
+        "lastModified": 1721727458,
+        "narHash": "sha256-r/xppY958gmZ4oTfLiHN0ZGuQ+RSTijDblVgVLFi1mw=",
         "owner": "nix-community",
         "repo": "naersk",
-        "rev": "aeb58d5e8faead8980a807c840232697982d47b9",
+        "rev": "3fb418eaf352498f6b6c30592e3beb63df42ef11",
         "type": "github"
       },
       "original": {
@@ -39,8 +39,8 @@
     "nixpkgs": {
       "locked": {
         "lastModified": 0,
-        "narHash": "sha256-aSpiNepFOMk9932HOax0XwNxbA38GOUVOiXfUVPOrck=",
-        "path": "/nix/store/j10523yhkcc34478azkgcl70yzcx6j2j-source",
+        "narHash": "sha256-+yj+xgsfZaErbfYM3T+QvEE2hU7UuE+Jf0fJCJ8uPS0=",
+        "path": "/nix/store/6inj491lsap4ia7mmvn2gbh53jb27zq0-source",
         "type": "path"
       },
       "original": {
@@ -50,11 +50,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1712439257,
-        "narHash": "sha256-aSpiNepFOMk9932HOax0XwNxbA38GOUVOiXfUVPOrck=",
+        "lastModified": 1725634671,
+        "narHash": "sha256-v3rIhsJBOMLR8e/RNWxr828tB+WywYIoajrZKFM+0Gg=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "ff0dbd94265ac470dda06a657d5fe49de93b4599",
+        "rev": "574d1eac1c200690e27b8eb4e24887f8df7ac27c",
         "type": "github"
       },
       "original": {