Improve Samba Global Configuration display in WebUI

Backend:
- Parse global config into structured key-value pairs
- Return parameters array instead of raw text
- Better handling of comments and empty lines

Frontend:
- Add 'Samba Config' tab to shares page
- Display config parameters in readable table format
- Color-code parameter names for clarity
- Add getSambaConfig() method to API client

Co-Authored-By: Patrick <patrick@perlbach24.de>

backend/services/shares.py

@@ -180,16 +180,15 @@ class SharesManager:
             return False
 
     def get_samba_global_config(self) -> Dict[str, Any]:
-        """Read Samba global configuration section"""
+        """Read Samba global configuration section as structured key-value pairs"""
         if not SAMBA_CONFIG.exists():
-            return {"raw": ""}
+            return {"parameters": []}
 
         try:
             with open(SAMBA_CONFIG, 'r') as f:
                 content = f.read()
 
-            # Extract global section
-            global_section = ""
+            parameters = []
             lines = content.split('\n')
             in_global = False
             for line in lines:
@@ -199,12 +198,20 @@ class SharesManager:
                 if in_global:
                     if line.strip().startswith('['):
                         break
-                    global_section += line + '\n'
+                    line = line.strip()
+                    if not line or line.startswith(';') or line.startswith('#'):
+                        continue
+                    if '=' in line:
+                        key, value = line.split('=', 1)
+                        parameters.append({
+                            "key": key.strip(),
+                            "value": value.strip()
+                        })
 
-            return {"raw": global_section.strip()}
+            return {"parameters": parameters}
         except Exception as e:
             logger.error(f"Error reading Samba global config: {e}")
-            return {"raw": ""}
+            return {"parameters": []}
 
     def set_samba_global_config(self, config_text: str) -> bool:
         """Write Samba global configuration section"""