Adds some helpful instructions for common errors which a maintainer may encounter during the release process.

* Add readme with steps to run the example

* Add script to run example as Cloud Run Job

* Replace GCR with Artifact Registry

* Rename GOOGLE_CLOUD_RUN_JOB_REGION to GOOGLE_CLOUD_RUN_REGION

* Update copyright from "Google" -> "Google LLC"

* update license check yaml to check for dockerfiles too

* update spotless config to reformat dockerfiles

* rename

* Support metric exporter for cloud run

* Enable metrics-exporter example to run as cloud run job (#249)

* Add readme with steps to run the example

* Add script to run example as Cloud Run Job

* Replace GCR with Artifact Registry

* Rename GOOGLE_CLOUD_RUN_JOB_REGION to GOOGLE_CLOUD_RUN_REGION

* Remove resource mapping for cloud-run

As per the exporter spec, we do not support pushing metric to cloud-run.
This change will cause cloud_run_revision to be treated as a
generic_task.

* Update the autoinstrument example to run in cloud-run

* Remove mapping for cloud functions

Cloud functions is also not writable for user-defined metrics, therefore
removing its explicit mapping so that it defaults to generic_task.

* Refactor: extract image name to a variable

* Update README to streamline service invocation instructions

* Update readme with instructions for command line

Using Java Paths class to combine string leads to different
path-separators depending on the OS of the machine code runs on. For
metric names, only the linux path-separators are valid, so hardcoding
this.

* Update to static final fields

Also fixes a typo

* Change logger name to fully qualified name