feat: make RenderableView.hitTest public to create a cross-library interface (#2555)

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# Summary

Adding an `RNGH <-> RNSVG` interface requires usage of
`RenderableView.hitTest` to work.
([link](https://github.com/software-mansion/react-native-gesture-handler/pull/3242))
Currently, `RenderableView.hitTest` is `package-private`, meaning it
cannot be accessed by other packages.
This change does not change any functionality of the library, it only
exposes existing functions to other libraries.

I only made public those `hitTest` implementation which are strictly
necessary for this interface, this is why multiple, if not most
`hitTest` implementations remain `package-private` despite the changes
made in the PR.

## Test Plan

- open the example app, see how the app builds successfully

### What's required for testing (prerequisites)?

- `RNSVG`'s `paper-example` app

### What are the steps to reproduce (after prerequisites)?

## Compatibility

| OS      | Implemented |
| ------- | :---------: |
| iOS     |    ❌      |
| MacOS   |    ❌      |
| Android |    ✅      |
| Web     |    ❌      |

## Checklist

<!-- Check completed item, when applicable, via: [X] -->

- [X] I have tested this on a device and a simulator
- [ ] I added documentation in `README.md`
- [ ] ~~I updated the typed files (typescript)~~
- [ ] I added a test for the API in the `__tests__` folder

android/src/main/java/com/horcrux/svg/ClipPathView.java

@@ -40,7 +40,7 @@ class ClipPathView extends GroupView {
   }
 
   @Override
-  int hitTest(float[] src) {
+  public int hitTest(float[] src) {
     return -1;
   }
 

android/src/main/java/com/horcrux/svg/GroupView.java

@@ -254,7 +254,7 @@ class GroupView extends RenderableView {
   }
 
   @Override
-  int hitTest(final float[] src) {
+  public int hitTest(final float[] src) {
     if (!mInvertible) {
       return -1;
     }

android/src/main/java/com/horcrux/svg/RenderableView.java

@@ -676,7 +676,7 @@ public abstract class RenderableView extends VirtualView implements ReactHitSlop
   abstract Path getPath(Canvas canvas, Paint paint);
 
   @Override
-  int hitTest(final float[] src) {
+  public int hitTest(final float[] src) {
     if (mPath == null || !mInvertible) {
       return -1;
     }

android/src/main/java/com/horcrux/svg/TSpanView.java

@@ -1208,7 +1208,7 @@ class TSpanView extends TextView {
   }
 
   @Override
-  int hitTest(final float[] src) {
+  public int hitTest(final float[] src) {
     if (mContent == null) {
       return super.hitTest(src);
     }

android/src/main/java/com/horcrux/svg/UseView.java

@@ -100,7 +100,7 @@ class UseView extends RenderableView {
   }
 
   @Override
-  int hitTest(float[] src) {
+  public int hitTest(float[] src) {
     if (!mInvertible) {
       return -1;
     }