Revert "Revert "develop --> Master" (#8244)" (#8450)

This reverts commit 5bcc47dddb.

src/mesh/http/WebServer.h

@@ -10,13 +10,17 @@ void createSSLCert();
 
 class WebServerThread : private concurrency::OSThread
 {
+  private:
+    uint32_t lastActivityTime = 0;
 
   public:
     WebServerThread();
     uint32_t requestRestart = 0;
+    void markActivity();
 
   protected:
     virtual int32_t runOnce() override;
+    int32_t getAdaptiveInterval();
 };
 
 extern WebServerThread *webServerThread;