[MOB-7322] automate ios sdk release with fastlane

[jyu115]

🔹 Jira Ticket(s)

• MOB-7322

Description

Implemented https://fastlane.tools/ to automate iOS SDK release. Also uses a fastlane plugin create_xcframework.

Steps to release in the new process:

1. Update CHANGELOG.md
2. Update new version number for sdkVersion variable in IterableAPI.swift
3. Push CHANGELOG.md and IterableAPI.swift changes to the branch
4. Run: fastlane ios release_sdk
   It will prompt you to enter release version number (e.g. 6.5.0-beta) and output directory (e.g. build2)

That's it! When release_sdk lane is run, it will run these lanes in subsequent order:

1. bump_release_version
2. clean_and_lint
3. build_xcframework
4. tag_version
5. pod_trunk_push

Github release created with assets uploaded:

• automatically uploads zip files and puts the correct changelog header section notes

Finished success status:

See available lanes:

[Ayyanchira]

So from Step 1 to Step 3 will be on a separate branch -> which will be reviewed by the team.
Once the branch is merged into master, thats when we run fastlane ios release_sdk right?
Does it also take care of uploading the zip files? Or will that need to be uploaded from build folder to tags?

[jyu115]

So from Step 1 to Step 3 will be on a separate branch -> which will be reviewed by the team. Once the branch is merged into master, thats when we run fastlane ios release_sdk right? Does it also take care of uploading the zip files? Or will that need to be uploaded from build folder to tags?

Yes I think the best process would be:

1. Step 1 to Step 3 on a separate branch and merge to master.
2. Run a github actions workflow -- this takes care of uploading zip files and creating a release

[Ayyanchira]

LGTM. Also the visual demo covered end to end flow which was nice 👍🏼