Add CLion pixi toolchain script (#19119)

* Add CLion pixi toolchain script

* Add CLion pixi toolchain script for Windows

contrib/clion/pixi/pixi-default.bash

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+#!/bin/bash
+
+# Change to the directory of this script (any subdirectory in the repository should work)
+cd "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &> /dev/null && pwd)"
+
+# If the line above does not work then try uncommenting the line below and insert the absolute path to your FreeCAD repository
+# cd "absolute/path/to/FreeCAD"
+
+# Activate pixi default environment
+eval "$(pixi shell-hook)"

contrib/clion/pixi/pixi-default.bat

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+@echo off
+REM Change to the directory of this script (any subdirectory in the repository should work)
+cd /d "%~dp0"
+
+REM Activate pixi default environment
+REM Write the output of pixi shell-hook to a temporary batch file and execute it
+set TEMP_BATCH_FILE=%TEMP%\pixi_shell_hook_freecad.bat
+pixi shell-hook > "%TEMP_BATCH_FILE%"
+call "%TEMP_BATCH_FILE%"
+del "%TEMP_BATCH_FILE%"