feat: add example .env file for environment configuration

Author: MickaelCa

.env.example

@@ -0,0 +1,35 @@
+# Gitingest Environment Variables
+
+# Host Configuration
+# Comma-separated list of allowed hostnames
+# Default: "gitingest.com, *.gitingest.com, localhost, 127.0.0.1"
+ALLOWED_HOSTS=gitingest.com,*.gitingest.com,localhost,127.0.0.1
+
+# GitHub Authentication
+# Personal Access Token for accessing private repositories
+# Generate your token here: https://github.com/settings/tokens/new?description=gitingest&scopes=repo
+# GITHUB_TOKEN=your_github_token_here
+
+# Metrics Configuration
+# Set to any value to enable the Prometheus metrics server
+# GITINGEST_METRICS_ENABLED=true
+# Host for the metrics server (default: "127.0.0.1")
+GITINGEST_METRICS_HOST=127.0.0.1
+# Port for the metrics server (default: "9090")
+GITINGEST_METRICS_PORT=9090
+
+# Sentry Configuration
+# Set to any value to enable Sentry error tracking
+# GITINGEST_SENTRY_ENABLED=true
+# Sentry DSN (required if Sentry is enabled)
+# GITINGEST_SENTRY_DSN=your_sentry_dsn_here
+# Sampling rate for performance data (default: "1.0", range: 0.0-1.0)
+GITINGEST_SENTRY_TRACES_SAMPLE_RATE=1.0
+# Sampling rate for profile sessions (default: "1.0", range: 0.0-1.0)
+GITINGEST_SENTRY_PROFILE_SESSION_SAMPLE_RATE=1.0
+# Profile lifecycle mode (default: "trace")
+GITINGEST_SENTRY_PROFILE_LIFECYCLE=trace
+# Send default personally identifiable information (default: "true")
+GITINGEST_SENTRY_SEND_DEFAULT_PII=true
+# Environment name for Sentry (default: "")
+GITINGEST_SENTRY_ENVIRONMENT=development