feat: add /health-check route
URL : /health-check
# Database status
####################################################################################
# HTTP Code HTML page contains HTTP header [ X-Tajine-Database-Status ]
# 200|503 DB_CONNECTION_SUCCESSFUL DB_CONNECTION_SUCCESSFUL
# 503 DB_CONNECTION_FAILED DB_CONNECTION_FAILED
# CFSSL status
####################################################################################
# HTTP Code HTML page contains HTTP header [ X-Tajine-Cfssl-Status ]
# 200|503 CFSSL_CONNECTION_SUCCESSFUL CFSSL_CONNECTION_SUCCESSFUL
# 503 CFSSL_CONNECTION_FAILED CFSSL_CONNECTION_FAILED
curl --head http://127.0.0.1:8001/health-check
# HTTP/1.1 200 OK
# Content-Type: text/html; charset=UTF-8
# X-Tajine-Database-Status: DB_CONNECTION_SUCCESSFUL
# X-Tajine-Cfssl-Status: CFSSL_CONNECTION_SUCCESSFUL
curl --head http://127.0.0.1:8001/health-check
# HTTP/1.1 503 Service Unavailable
# Content-Type: text/html; charset=UTF-8
# X-Tajine-Database-Status: DB_CONNECTION_FAILED
# X-Tajine-Cfssl-Status: CFSSL_CONNECTION_SUCCESSFUL
curl --head http://127.0.0.1:8001/health-check
# HTTP/1.1 503 Service Unavailable
# Content-Type: text/html; charset=UTF-8
# X-Tajine-Database-Status: DB_CONNECTION_SUCCESSFUL
# X-Tajine-Cfssl-Status: CFSSL_CONNECTION_FAILED
curl --head http://127.0.0.1:8001/health-check
# HTTP/1.1 503 Service Unavailable
# Content-Type: text/html; charset=UTF-8
# X-Tajine-Database-Status: DB_CONNECTION_FAILED
# X-Tajine-Cfssl-Status: CFSSL_CONNECTION_FAILED