allow disabling the Long tap tp capture feature

app/src/main/java/com/simplemobiletools/camera/Config.java

@@ -0,0 +1,24 @@
+package com.simplemobiletools.camera;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+public class Config {
+    private SharedPreferences prefs;
+
+    public static Config newInstance(Context context) {
+        return new Config(context);
+    }
+
+    public Config(Context context) {
+        prefs = context.getSharedPreferences(Constants.PREFS_KEY, Context.MODE_PRIVATE);
+    }
+
+    public boolean getLongTapEnabled() {
+        return prefs.getBoolean(Constants.LONG_TAP, true);
+    }
+
+    public void setLongTapEnabled(boolean enabled) {
+        prefs.edit().putBoolean(Constants.LONG_TAP, enabled).apply();
+    }
+}