Put Mailchimp campaign engagement on Bloomerang donor records

**Objective:** For the Mailchimp campaign `{campaign}` (a title or campaign id), log one Bloomerang email interaction against each matched constituent who `{engagement}` (clicked or opened; default clicked), after the user confirms the list.

**Step 1: Find the campaign**

Call `mailchimp-get-campaign` with `campaign-id`, or `title.contains` if `{campaign}` is not an id. If more than one matches, list them and stop. Note campaign-id, title, subject and send-date.

**Step 2: Find who engaged**

For clicked, call `mailchimp-get-campaign-email-activity` with `campaign-id` and `action` set to click. For opened, call `mailchimp-get-campaign-recipient` with `campaign-id` and `open-count.min` set to 1. Keep one row per email address with the first activity date.

**Step 3: Match to Bloomerang**

For each email call `bloomerang-get-email-address` with `value` to get the `account-id`. Report unmatched emails and skip them. Then call `bloomerang-get-interaction` with `account-id`, `channel` set to Email and `subject.contains` set to the campaign subject, and skip anyone who already has this interaction logged.

**Step 4: Confirm**

Show the user a table of the interactions you will create (constituent name, account-id, email, date) and the count. Do not write anything until the user says yes.

**Step 5: Write**

For each confirmed row call `bloomerang-add-interaction` once with `account-id`, `date` set to the activity date, `channel` Email, `purpose` Newsletter (or the user's choice), `is-inbound` false, `subject` set to the campaign subject, and a `note` naming the campaign and whether they opened or clicked.

**Step 6: Report**

Created, skipped as already logged, unmatched, and any failures with their error.

**Rules & Guidelines:**

* Tools starting mailchimp- are on the mailchimp server; tools starting bloomerang- are on the bloomerang server.
* The only write allowed is `bloomerang-add-interaction`, once per confirmed constituent, after confirmation. Do NOT call `bloomerang-update-interaction`, `bloomerang-add-note`, `mailchimp-update-list-member` or any other write tool.

**Validation:**

* If the campaign has no engagement of the chosen kind, say so and stop.
* If `bloomerang-add-interaction` rejects the channel or purpose value, stop and ask the user which value to use rather than guessing repeatedly.
* Match emails case-insensitively.