message: Remove the file requirement for the slow ci. Add comments about the purpose of the CI build
diff: # iModel.js CI Build
  +#
  +# This build is used to validate all fork-based PRs and run on a schedule to provide the build status in the README.
  +#
  +# It runs on the Hosted Azure Pipelines machines which are slow building the code in the repo, especially the test-apps
  +# which require several webpacking steps. Due to the time it takes to run, these are only used in a limited number of cases.
  +#
  +# The main CI build used is the ./jobs/fast-ci.yaml due to it running on a set of faster machines. However, those are currently
  +# only available to members of the iModel.js GitHub Organization for security reasons. This may change in the future but for now
  +# the limitation will exist.
  +#
  +# This build is not automatically queued for fork-based PRs and needs to be manually triggered by using a comment trigger in the PR.
  +# Anyone in the iModel.js Org can trigger this pipeline by adding this comment,
  +# `/azp run imodeljs.imodeljs`
  trigger: none
  -pr:
  - drafts: false
  - branches:
  - include:
  - - master
  - - releases/*
  - paths:
  - include:
  - - common/config/azure-pipelines/ci.yaml
  -
  schedules:
  - cron: "0 5 * * *"
  displayName: Daily midnight build
  