Add info-level logging for config files read and enhance output (#4375)

Co-authored-by: Benjamin Hackl <[email protected]>

Author: xnov18

manim/_config/utils.py

@@ -122,10 +122,14 @@ def make_config_parser(
     # read_file() before calling read() for any optional files."
     # https://docs.python.org/3/library/configparser.html#configparser.ConfigParser.read
     parser = configparser.ConfigParser()
+    logger.info(f"Reading config file: {library_wide}")
     with library_wide.open() as file:
         parser.read_file(file)  # necessary file
 
     other_files = [user_wide, Path(custom_file) if custom_file else folder_wide]
+    for path in other_files:
+        if path.exists():
+            logger.info(f"Reading config file: {path}")
     parser.read(other_files)  # optional files
 
     return parser

manim/cli/cfg/group.py

@@ -267,6 +267,12 @@ def write(level: str | None = None, openfile: bool = False) -> None:
 
 @cfg.command(context_settings=cli_ctx_settings)
 def show() -> None:
+    console.print("CONFIG FILES READ", style="bold green underline")
+    for path in config_file_paths():
+        if path.exists():
+            console.print(f"{path}")
+    console.print()
+
     parser = make_config_parser()
     rich_non_style_entries = [a.replace(".", "_") for a in RICH_NON_STYLE_ENTRIES]
     for category in parser: