Add wifi hotspot manager class

This classes manages all the wifi-hotspot logic.
It uses WifiManager and WifiConfiguration classes by Android.
Add method to check show write permission settings.
Add method setWifiEnabled to setup wifi hotspot
Add setters/getters for WifiConfiguration

app/src/main/java/org/kiwix/kiwixmobile/wifi_hotspot/WifiHotspotManager.java

@@ -0,0 +1,68 @@
+package org.kiwix.kiwixmobile.wifi_hotspot;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.net.wifi.WifiConfiguration;
+import android.net.wifi.WifiManager;
+import android.os.Build;
+import android.provider.Settings;
+import android.util.Log;
+import java.lang.reflect.Method;
+
+public class WifiHotspotManager {
+  private final WifiManager wifiManager;
+  private Context context;
+
+  public WifiHotspotManager(Context context) {
+    this.context = context;
+    wifiManager = (WifiManager) this.context.getSystemService(Context.WIFI_SERVICE);
+  }
+
+  public void showWritePermissionSettings(boolean force) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+      if (force || !Settings.System.canWrite(this.context)) {
+        Intent intent = new Intent(android.provider.Settings.ACTION_MANAGE_WRITE_SETTINGS);
+        intent.setData(Uri.parse("package:" + this.context.getPackageName()));
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        this.context.startActivity(intent);
+      }
+    }
+  }
+
+  public boolean setWifiEnabled(WifiConfiguration wifiConfig, boolean enabled) {
+    try {
+      if (enabled) {
+        wifiManager.setWifiEnabled(false);
+      }
+
+      Method method = wifiManager.getClass()
+          .getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);
+      return (Boolean) method.invoke(wifiManager, wifiConfig, enabled);
+    } catch (Exception e) {
+      Log.e(this.getClass().toString(), "", e);
+      return false;
+    }
+  }
+
+  public WifiConfiguration getWifiApConfiguration() {
+    try {
+      Method method = wifiManager.getClass().getMethod("getWifiApConfiguration");
+      return (WifiConfiguration) method.invoke(wifiManager);
+    } catch (Exception e) {
+      Log.e(this.getClass().toString(), "", e);
+      return null;
+    }
+  }
+
+  public boolean setWifiApConfiguration(WifiConfiguration wifiConfig) {
+    try {
+      Method method =
+          wifiManager.getClass().getMethod("setWifiApConfiguration", WifiConfiguration.class);
+      return (Boolean) method.invoke(wifiManager, wifiConfig);
+    } catch (Exception e) {
+      Log.e(this.getClass().toString(), "", e);
+      return false;
+    }
+  }
+}