Attempt to migrate from MINGW64 to UCRT64 as arm-none-eabi-gcc is not available anymore in MINGW64

cf msys2/MINGW-packages@bb41250

Author: doegox

.github/workflows/windows.yml

@@ -23,9 +23,9 @@ jobs:
       run:
         shell: pwsh
     env:
-      PATH: C:/ProxSpace/msys2/mingw64/bin;C:/ProxSpace/msys2/usr/local/bin;C:/ProxSpace/msys2/usr/bin;C:/ProxSpace/msys2/bin
-      MSYSTEM: MINGW64
-      PYTHONHOME: /mingw64
+      PATH: C:/ProxSpace/msys2/ucrt64/bin;C:/ProxSpace/msys2/usr/local/bin;C:/ProxSpace/msys2/usr/bin;C:/ProxSpace/msys2/bin
+      MSYSTEM: UCRT64
+      PYTHONHOME: /ucrt64
 
     steps:
       - name: ProxSpace download
@@ -54,7 +54,7 @@ jobs:
                 Write-Host "Attempt $i..."
                 ./runme64.bat -c "exit"
                 if ($LASTEXITCODE -eq 0) { 
-                    ./runme64.bat -c "pacman -Syu --noconfirm mingw-w64-x86_64-qt6-base"
+                  ./runme64.bat -c "pacman -Syu --noconfirm mingw-w64-ucrt-x86_64-qt6-base"
                     exit 0
                 }
                 if ($i -lt $maxAttempts) { Start-Sleep -Seconds $delay }

.vscode/tasks.json

@@ -6,8 +6,8 @@
         "options": {
             "cwd": "${workspaceFolder}",
             "env": {
-                "PATH": "${workspaceFolder}/../../msys2/mingw64/bin;${workspaceFolder}/../../msys2/usr/local/bin;${workspaceFolder}/../../msys2/usr/bin;${workspaceFolder}/../../msys2/bin",
-                "MSYSTEM": "MINGW64"
+                "PATH": "${workspaceFolder}/../../msys2/ucrt64/bin;${workspaceFolder}/../../msys2/usr/local/bin;${workspaceFolder}/../../msys2/usr/bin;${workspaceFolder}/../../msys2/bin",
+                "MSYSTEM": "UCRT64"
             }
         }
     },

.vscode/templates/launch_ps.json

@@ -6,8 +6,8 @@
 	"options": {
         "cwd": "${workspaceFolder}",
         "env": {
-            "PATH": "${workspaceFolder}/../../msys2/mingw64/bin;${workspaceFolder}/../../msys2/usr/local/bin;${workspaceFolder}/../../msys2/usr/bin;${workspaceFolder}/../../msys2/bin",
-            "MSYSTEM": "MINGW64"
+            "PATH": "${workspaceFolder}/../../msys2/ucrt64/bin;${workspaceFolder}/../../msys2/usr/local/bin;${workspaceFolder}/../../msys2/usr/bin;${workspaceFolder}/../../msys2/bin",
+            "MSYSTEM": "UCRT64"
         }
     },
     "configurations": [
@@ -29,7 +29,7 @@
                 }
             ],
             "preLaunchTask": "client: Debug: clean & make",
-            "miDebuggerPath": "${workspaceFolder}/../../msys2/mingw64/bin/gdb.exe"
+            "miDebuggerPath": "${workspaceFolder}/../../msys2/ucrt64/bin/gdb.exe"
         },{
             "name": "Firmware: (J-Link) Build & Launch",
             "type": "cortex-debug",
@@ -43,7 +43,7 @@
             "interface": "jtag",
             "serialNumber": "", //If you have more than one J-Link probe, add the serial number here.
             "runToMain": false,
-            "armToolchainPath": "${workspaceFolder}/../../msys2/mingw64/bin"
+            "armToolchainPath": "${workspaceFolder}/../../msys2/ucrt64/bin"
         }
     ]
 }

client/CMakeLists.txt

@@ -23,8 +23,8 @@
 #  On ProxSpace 3.4:
 #    cmake -G"MSYS Makefiles" ..
 #  On Proxspace 3.3 or less, you need to install cmake:
-#    pacman -S mingw-w64-x86_64-cmake
-#    /mingw64/bin/cmake -G"MSYS Makefiles" ..
+#    pacman -S mingw-w64-ucrt-x86_64-cmake
+#    /ucrt64/bin/cmake -G"MSYS Makefiles" ..
 #
 # Android cross-compilation: (ANDROID_ABI=arm64-v8a for a 64b version)
 # cmake \

client/experimental_lib/CMakeLists.txt

@@ -23,8 +23,8 @@
 #  On ProxSpace 3.4:
 #    cmake -G"MSYS Makefiles" ..
 #  On Proxspace 3.3 or less, you need to install cmake:
-#    pacman -S mingw-w64-x86_64-cmake
-#    /mingw64/bin/cmake -G"MSYS Makefiles" ..
+#    pacman -S mingw-w64-ucrt-x86_64-cmake
+#    /ucrt64/bin/cmake -G"MSYS Makefiles" ..
 #
 # Android cross-compilation: (ANDROID_ABI=arm64-v8a for a 64b version)
 # cmake \