feat: add ffmpeg and flac installation to Dockerfiles

- Updated `Dockerfile` to install `ffmpeg` and `flac` along with existing packages.
- Updated `Dockerfile-slim` to install `ffmpeg` and `flac` along with existing packages.
- Modified `any_provider.py` to change how providers are handled when a model is specified, allowing for a submodel to be extracted and checked against the provider's attributes.
- Adjusted `retry_provider.py` to ensure the alias for the model is correctly set based on the provider's model aliases, improving clarity in debug logging.

docker/Dockerfile

@@ -19,7 +19,7 @@ RUN if [ "$G4F_VERSION" = "" ] ; then \
 RUN apt-get -qqy update \
   && apt-get -qqy upgrade \
   && apt-get -qyy autoremove \
-  && apt-get -qqy install python3 python-is-python3 pip \
+  && apt-get -qqy install python3 python-is-python3 pip ffmpeg flac \
   && apt-get -qyy remove openjdk-11-jre-headless \
   && apt-get -qyy autoremove \
   && apt-get -qyy clean \

docker/Dockerfile-slim

@@ -12,7 +12,7 @@ ENV G4F_USER_ID $G4F_USER_ID
 ENV G4F_DIR /app
 
 RUN apt-get update && apt-get upgrade -y \
-  && apt-get install -y git cron \
+  && apt-get install -y git cron ffmpeg flac \
 # Add user and user group
   && groupadd -g $G4F_USER_ID $G4F_USER \
   && useradd -rm -G sudo -u $G4F_USER_ID -g $G4F_USER_ID $G4F_USER \