Add installer GUI and file system access feature

This commit introduces a new Tkinter-based GUI installer script (`installer/main.py`) that manages file extraction and shortcut creation. Additionally, a new file system access feature was added to the `ToolboxWindow` class, allowing users to open directories with platform-specific commands. Improvements also include platform-specific adjustments for Windows executables in the CMake configuration.

installer/coder.py

@@ -0,0 +1,20 @@
+import base64
+
+
+def encode_file_to_base64(file_path):
+    with open(file_path, 'rb') as file:
+        return base64.b64encode(file.read()).decode('utf-8')
+
+
+# Base64-kodierte Strings generieren
+exe_base64 = encode_file_to_base64("D:/Repos/toolbox/cmake-build-release-visual-studio/Toolbox.exe")
+icon_base64 = encode_file_to_base64("D:/Repos/toolbox/cmake-build-release-visual-studio/toolbox.ico")
+
+# Base64-Strings in Textdateien schreiben
+with open("Toolbox_exe_base64.txt", 'w') as exe_file:
+    exe_file.write(exe_base64)
+
+with open("Toolbox_icon_base64.txt", 'w') as icon_file:
+    icon_file.write(icon_base64)
+
+print("Base64-Daten erfolgreich in Textdateien gespeichert.")