Refactored Theme class to correspond SOLID patterns

scripts/utils/style_manager.py

@@ -0,0 +1,19 @@
+from scripts.utils import generate_file
+
+
+class StyleManager:
+    def __init__(self, output_file: str):
+        self.output_file = output_file
+
+    def append_content(self, content: str):
+        with open(self.output_file, 'a') as output:
+            output.write(content + '\n')
+
+    def prepend_content(self, content: str):
+        with open(self.output_file, 'r') as output:
+            main_content = output.read()
+        with open(self.output_file, 'w') as output:
+            output.write(content + '\n' + main_content)
+
+    def generate_combined_styles(self, sources_location: str, temp_folder: str):
+        generate_file(sources_location, temp_folder, self.output_file)