SDK v4 metadata tags change

[davidbrota]

Description of the changes

Rename entity tags to entity metadata Adding a tag to an entity adds the prefix "tags." to the key. Add "integration" section to integration

PR Review Checklist

Author

• [ ] add a risk label after carefully considering the "blast radius" of your changes
• [ ] describe the intent of your changes in the description. don't just rewrite your code in prose
• [ ] assign at least one reviewer
• [ ] document feature

Reviewer

• [ ] review code for readability
• [ ] verify that high risk behavior changes are well tested
• [ ] check license for any new external dependency
• [ ] request documenation about anything that isn't clear and obvious
• [ ] document agent version supporting the feature

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