Refactor project structure and enhance Docker support

- Removed unnecessary `__init__.py` and `Dockerfile` to streamline project organization.
- Updated `.dockerignore` and `.gitignore` to improve exclusion patterns for build artifacts and environment files.
- Enhanced `Makefile` with new commands for managing Docker containers and added help documentation.
- Introduced `pyproject.toml` for better project metadata management and dependency tracking.
- Updated `requirements.txt` to reflect changes in dependencies for metrics and monitoring.
- Refactored various handler files to improve code organization and maintainability.

Dockerfile

@@ -1,37 +0,0 @@
-# syntax=docker/dockerfile:1
-
-# Use a lightweight Python image
-FROM python:3.11-slim
-
-# Prevent Python from writing .pyc files and enable unbuffered logs
-ENV PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1
-
-# Install system dependencies (if required by Python packages)
-RUN apt-get update \
-    && apt-get install -y --no-install-recommends build-essential \
-    && rm -rf /var/lib/apt/lists/*
-
-# Set working directory
-WORKDIR /app
-
-# Create non-root user
-RUN useradd -m appuser \
-    && chown -R appuser:appuser /app
-
-# Install Python dependencies first for better layer caching
-COPY requirements.txt ./
-RUN pip install --no-cache-dir -r requirements.txt
-
-# Copy project files
-COPY . .
-
-# Ensure runtime directories exist and are writable
-RUN mkdir -p logs database \
-    && chown -R appuser:appuser /app
-
-# Switch to non-root user
-USER appuser
-
-# Run the bot
-CMD ["python", "run_helper.py"]