This change implements the required code for creating the Tanzu Tile.
The Tanzu Tile is a way to deploy the collector to get metrics from
the Tanzu environment. In the tile directory, run the command
./make-latest-tile to generate the Tanzu tile. Refer to DEVELOPMENT.md
to know how to properly use the created tile.

New action tests tile creation to make sure changes
to the BOSH releaes and Tanzu tile don't break making
the tile. Also, fix BOSH release test link to homebrew.

There is no need to download and have the Smart Agent as
a dependency for the bosh release and tanzu tile, so this
removes it.

- Add makefile for BOSH deployment effort
- Add more links for BOSH development info
- Clear up confusion with READMEs

I got in contact with Josh Johnson, a product designer
for Splunk o11y, and he provided the Splunk logo that
is broadly used in o11y.

- Should be splunk-otel-collector rather than splunk-opentelemetry-collector

- Add OpenTelemetry to Splunk Collector references
- Make shallow clone in setup script
- Set homebrew action to specific commit

When the variable name is alone it's interpreted as a command,
rather than setting the variable.