Expand configuration (#368)

* Allow configuring httpMaxConns

default: 100

* Allow setting NITTER_CONF_FILE path env var

Co-authored-by: 3nprob <3nprob@3nprob>

src/config.nim

@@ -16,6 +16,8 @@ proc getConfig*(path: string): (Config, parseCfg.Config) =
     address: cfg.get("Server", "address", "0.0.0.0"),
     port: cfg.get("Server", "port", 8080),
     useHttps: cfg.get("Server", "https", true),
+    httpMaxConns: cfg.get("Server", "httpMaxConnections", 100),
+
     title: cfg.get("Server", "title", "Nitter"),
     hostname: cfg.get("Server", "hostname", "nitter.net"),
     staticDir: cfg.get("Server", "staticDir", "./public"),