Fix race in sparkey write

[kellen]

Intended to fix #4890

Introduces a write to a temporary location before a finalization step moving temp files to their final destination.

Unifies the various SparkeyUri subclasses for simpler handling, removes kryo coder, moves provision of RemoteFileUtil to transform steps.

[codecov]

Codecov Report

Merging #4937 (2116c3c) into v0.14.x (308f332) will increase coverage by 0.37%.
Report is 7 commits behind head on v0.14.x.
The diff coverage is 90.00%.

❗ Current head 2116c3c differs from pull request most recent head 1751cb4. Consider uploading reports for the commit 1751cb4 to get more accurate results

@@             Coverage Diff             @@
##           v0.14.x    #4937      +/-   ##
===========================================
+ Coverage    62.98%   63.36%   +0.37%     
===========================================
  Files          282      284       +2     
  Lines        10648    10698      +50     
  Branches       789      781       -8     
===========================================
+ Hits          6707     6779      +72     
+ Misses        3941     3919      -22     

Files Changed	Coverage Δ
...src/main/scala/com/spotify/scio/avro/package.scala	100.00% <ø> (ø)
...fy/scio/avro/schemas/instances/AvroInstances.scala	0.00% <ø> (ø)
.../scala/com/spotify/scio/coders/AvroBytesUtil.scala	100.00% <ø> (ø)
.../com/spotify/scio/protobuf/util/ProtobufUtil.scala	100.00% <ø> (ø)
...src/main/scala/com/spotify/scio/coders/Coder.scala	93.47% <ø> (ø)
...ify/scio/io/dynamic/syntax/SCollectionSyntax.scala	88.88% <ø> (-1.50%)	⬇️
...c/main/scala/com/spotify/scio/schemas/Schema.scala	68.18% <ø> (ø)
.../main/scala/com/spotify/scio/pubsub/PubsubIO.scala	15.11% <0.00%> (ø)
...y/scio/extra/sparkey/instances/SparkeyWriter.scala	58.33% <58.33%> (ø)
...ro/src/main/scala/com/spotify/scio/avro/taps.scala	31.03% <75.00%> (ø)
... and 12 more

... and 2 files with indirect coverage changes

[RustedBones]

shouldn't this target 0.14 as this is breaking mima ?