feat(shell-api): add reconfigForPSASet helper MONGOSH-702 (#896)

This provides the same functionality as the newly introduced legacy
shell equivalent.

Notable differences are:
- This does some type cleanup around the replset code
- This is more verbose, and prints:
  - A warning if the new member is already in the existing config
    with a different _id but the same hostname
  - Indicators that retrying is still going on when it is
  - The second reconfig commmand, if it failed, so that the user
    can retry manually
- This performs exponential backoff while waiting for the second
  reconfig to succeed
- This uses a fixed number of attempts (12) instead of a fixed
  duration (90 seconds) for performing the second reconfig

Author: addaleax

packages/i18n/src/locales/en_US.ts

@@ -1399,6 +1399,11 @@ const translations: Catalog = {
               description: 'Reconfigures an existing replica set, overwriting the existing replica set configuration.',
               example: 'rs.reconfig()'
             },
+            reconfigForPSASet: {
+              link: 'https://docs.mongodb.com/manual/reference/method/rs.reconfigForPSASet',
+              description: 'Reconfigures an existing replica set, overwriting the existing replica set configuration, if the reconfiguration is a transition from a Primary-Arbiter to a Primary-Secondary-Arbiter set.',
+              example: 'rs.reconfigForPSASet(indexOfNewMemberInMembersArray, config)'
+            },
             conf: {
               link: 'https://docs.mongodb.com/manual/reference/method/rs.conf',
               description: 'Calls replSetConfig',