add datadog-integrations-core

[joshrwolf]

the integrations components needed at runtime by datadog-agent

[smoser]

$ tar tvf packages/x86_64/datadog-integrations-core-7.53.0-r0.apk
drwxrwxr-x root/root         0 1969-12-31 19:00 usr/bin/__pycache__
-rw-rw-r-- root/root      3204 1969-12-31 19:00 usr/bin/__pycache__/jp.cpython-312.pyc
-rwxrwxr-x root/root       227 1969-12-31 19:00 usr/bin/ddtrace-run
-rwxrwxr-x root/root      1695 1969-12-31 19:00 usr/bin/jp.py
-rwxrwxr-x root/root       213 1969-12-31 19:00 usr/bin/jsonschema
-rwxrwxr-x root/root       233 1969-12-31 19:00 usr/bin/normalizer
-rwxrwxr-x root/root       214 1969-12-31 19:00 usr/bin/pyspnego-parse

There are differing levels of yuck there. The biggest is pycache dir in bin/.

Where we use the pip install approach, we really need to also use a virtual env.
You can see az.yaml for an example of what we're doing there.

[joshrwolf]

closing this since I now realize this needs to be part of the main datadog-agent package (for datadog reasons)