Copy createServicePolicy to base-data-service

[mcmire]

Explanation

Currently createServicePolicy lives in controller-utils, as originally we wrote it as an abstract utility that could theoretically be used for any kind of data access. However, there are a few reasons why this is suboptimal now:

1. controller-utils is too large and serves as a dependent of almost every package in the monorepo, so extreme care must be taken when changing this package to avoid breaking changes.
2. createServicePolicy was added before we formalized data services. Now we have a BaseDataService class, and this class sets up createServicePolicy by default, so it's highly unlikely that createServicePolicy will be used independently going forward.
3. Also, we only use createServicePolicy for HTTP requests, so making it abstract is kind of unnecessary.

This commit deprecates the existing exports in controller-utils, copies them to base-data-service, and changes BaseDataService to use the copied version instead.

In the future we will remove the symbols from controller-utils and modify createServicePolicy further so it works better for HTTP requests.

References

No ticket yet, but this is related to https://consensyssoftware.atlassian.net/browse/WPC-1037 in that BaseDataService needs to be more fully-fledged to be as easy to use.

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them