RxFirebase2-Storage Kotlin support

<!-- https://jarcasting.com/artifacts/com.github.b3er.rxfirebase/firebase-storage-kotlin/ -->
<dependency>
    <groupId>com.github.b3er.rxfirebase</groupId>
    <artifactId>firebase-storage-kotlin</artifactId>
    <version>11.2.0</version>
    <type>aar</type>
</dependency>

// https://jarcasting.com/artifacts/com.github.b3er.rxfirebase/firebase-storage-kotlin/
implementation 'com.github.b3er.rxfirebase:firebase-storage-kotlin:11.2.0'

// https://jarcasting.com/artifacts/com.github.b3er.rxfirebase/firebase-storage-kotlin/
implementation ("com.github.b3er.rxfirebase:firebase-storage-kotlin:11.2.0")

'com.github.b3er.rxfirebase:firebase-storage-kotlin:aar:11.2.0'

<dependency org="com.github.b3er.rxfirebase" name="firebase-storage-kotlin" rev="11.2.0">
  <artifact name="firebase-storage-kotlin" type="aar" />
</dependency>

@Grapes(
@Grab(group='com.github.b3er.rxfirebase', module='firebase-storage-kotlin', version='11.2.0')
)

libraryDependencies += "com.github.b3er.rxfirebase" % "firebase-storage-kotlin" % "11.2.0"

[com.github.b3er.rxfirebase/firebase-storage-kotlin "11.2.0"]