OTL-1409 Add support for Operator based Java auto-instrumentation

[jvoravong]

Description:

• With these changes I am proposing to add Operator based Java auto-instrumentation to this Helm chart as an experimental feature.
• Most of the rendered manifests can be ignored, I suggest only looking at the rendered manifests under the operator subdirectory. They are the only ones containing original content that is being added.
• The example and documentation being added only shows how to configure auto-instrumentation for a single and simple happy path use case. There are other ways we could setup auto-instrumentation that we should document in the future.
• More follow up PRs are to come.

New Documentation Links:

• https://github.com/jvoravong/splunk-otel-collector-chart/blob/OTL-1409/docs/auto-instrumentation-introduction.md
• https://github.com/jvoravong/splunk-otel-collector-chart/blob/OTL-1409/docs/auto-instrumentation-install.md
• https://github.com/jvoravong/splunk-otel-collector-chart/blob/OTL-1409/examples/enable-operator-and-auto-instrumentation/README.md

Testing:

• Tested locally and manually with the following specs.
  • minikube v1.29.0 on Darwin 13.2.1
  • hyperkit driver
  • Resources CPUs=4, Memory=8192MB, Disk=20000MB

[jvoravong]

Thanks for the feedback @rmfitzpatrick. I have met with several others I work with and have received excellent feedback. More changes coming soon.

[dmitryax]

Couple nits, otherwise LGTM