feat: Implement Steam login initialization logic

- Added SteamLoginInitLogic to handle the initiation of Steam login.
- Created service context for managing configuration and Redis connection.
- Defined types for Steam login requests and callbacks.
- Implemented utility functions for building OpenID query strings and validating responses from Steam.
- Updated go.mod and go.sum to include necessary dependencies.
- Modified GenApi.ps1 script to generate code in the correct directory.

Dockerfile

@@ -7,14 +7,14 @@ RUN apk add --no-cache git
 # Set working directory
 WORKDIR /app
 
-# Copy go mod files from src directory
-COPY src/go.mod src/go.sum ./
+# Copy go mod files from root directory
+COPY go.mod go.sum ./
 
 # Download dependencies
 RUN go mod download
 
-# Copy source code from src directory
-COPY src/ .
+# Copy source code from app directory
+COPY app/ .
 
 # Build the application
 RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o authenticator authenticator.go