Add PickerLauncher wrapper for media/file pickers. (#361)

* Add `PickerLauncher` wrapper for media/file pickers.

* Add FileProvider path, handle Camera picker and add NoOp implementation to fix tests.

* Move media pickers to their own module.

* Add missing media pickers

* Add feature flag and some extra tests

app/src/main/AndroidManifest.xml

@@ -28,6 +28,16 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.ElementX"
         tools:targetApi="33">
+
+        <provider
+            android:authorities="${applicationId}.fileprovider"
+            android:name="androidx.core.content.FileProvider"
+            android:grantUriPermissions="true"
+            android:exported="false">
+            <meta-data  android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_providers" />
+        </provider>
+
         <activity
             android:name=".MainActivity"
             android:configChanges="orientation|screenSize|screenLayout|keyboardHidden|uiMode"

app/src/main/res/xml/file_providers.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright (c) 2023 New Vector Ltd
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <cache-path name="cache" path="." />
+</paths>