add adjust soft input optional config for Lightbox on android platform (#1697)

* add adjust soft input optional config for Lightbox on android platform

* Add doc about adjustSoftInput for showLightBox

android/app/src/main/java/com/reactnativenavigation/params/LightBoxParams.java

     public StyleParams.Color backgroundColor;
     public boolean tapBackgroundToDismiss;
     public boolean overrideBackPress;
+    public int adjustSoftInput;
 }

android/app/src/main/java/com/reactnativenavigation/params/parsers/LightBoxParamsParser.java

 package com.reactnativenavigation.params.parsers;
 
 import android.os.Bundle;
+import android.view.WindowManager;
+
 import com.reactnativenavigation.params.LightBoxParams;
 import com.reactnativenavigation.params.NavigationParams;
 
         result.backgroundColor = getColor(params, "backgroundColor");
         result.tapBackgroundToDismiss = params.getBoolean("tapBackgroundToDismiss");
         result.overrideBackPress = params.getBoolean("overrideBackPress");
+        result.adjustSoftInput = Adjustment.fromString(params.getString("adjustSoftInput")).value;
         return result;
     }
+
+    public enum Adjustment {
+        NOTHING("nothing", WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING),
+        PAN("pan", WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN),
+        RESIZE("resize", WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE),
+        UNSPECIFIED("unspecified", WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED);
+
+        private String name;
+        private int value;
+
+        Adjustment(String name, int value) {
+            this.name = name;
+            this.value = value;
+        }
+
+        @Override
+        public String toString() {
+            return name;
+        }
+
+        public static Adjustment fromString(String name) {
+            for (Adjustment adjustment : values()) {
+                if (adjustment.name.equals(name)) {
+                    return adjustment;
+                }
+            }
+            return UNSPECIFIED;
+        }
+
+    }
 }

android/app/src/main/java/com/reactnativenavigation/views/LightBox.java

         createContent(activity, params);
         setCancelable(cancelable);
         getWindow().setWindowAnimations(android.R.style.Animation);
+        getWindow().setSoftInputMode(params.adjustSoftInput);
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
             getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);

docs/screen-api.md

  style: {
    backgroundBlur: "dark", // 'dark' / 'light' / 'xlight' / 'none' - the type of blur on the background
    backgroundColor: "#ff000080" // tint color for the background, you can specify alpha here (optional)
- }
+ },
+ adjustSoftInput: "resize", // android only, adjust soft input, modes: 'nothing', 'pan', 'resize', 'unspecified' (optional, default 'unspecified')
 });
 ```