feat: Add Rokt SDK+ repo to mono repo

[BrandonStalnaker]

Background

• Rokt SDK+ (RoktSDKPlus) lived in a separate repo and was versioned on its own (e.g. 1.x), while the mParticle Apple SDK and mParticle-Rokt kit are released from this monorepo with a single ecosystem semver. We needed one source of truth in this repo (like integration kits), mirroring to ROKT/rokt-sdk-plus-ios, and releases aligned with the core SDK for both SwiftPM and CocoaPods, without treating it as a classic “kit” product.

What Has Changed

• New subtree Kits/rokt-sdk-plus/rokt-sdk-plus-ios/ with Package.swift, RoktSDKPlus.podspec, Sources/RoktSDKPlus/, README.md, and LICENSE, wired to local Kits/rokt/rokt when USE_LOCAL_VERSION is set and to the published mParticle-Rokt Git URL on the mirror.
• Kits/matrix.json entry rokt-sdk-plus-ios: build/lint/release matrix, dest_org: ROKT, dest_repo: rokt-sdk-plus-ios, flags for SPM-only layout (no Xcode app project), skipped example/test steps, and extra pod lint includes for mParticle-Rokt.podspec.
• .github/workflows/build-kits.yml: resolve/build Swift packages that have no .xcodeproj, optional pod lint extra includes, and conditional example + SPM test steps.
• .github/workflows/release-publish.yml: archive path for SPM-only packages; mirror/token owner supports dest_org (default mparticle-integrations); CocoaPods step waits for mParticle-Rokt on trunk before pushing RoktSDKPlus.
• .github/workflows/release-draft.yml: bumps RoktSDKPlus.version in Swift on release.
• CHANGELOG.md and RELEASE.md: document the umbrella and ROKT mirror / GitHub App expectations.
• Versioning: RoktSDKPlus podspec, Package.swift let version, and RoktSDKPlus.version match the monorepo VERSION (e.g. 9.1.0); CocoaPods pins mParticle-Rokt to s.version.

Checklist

• [x I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have added tests that prove my fix is effective or that my feature works.
• I have tested this locally.

Reference Issue (For employees only. Ignore if you are an outside contributor)

• Closes https://go/j/[ticket-number]

[cursor]

PR Summary

Medium Risk
Medium risk because it changes CI/release automation (build, mirroring, CocoaPods publish ordering) and introduces a new kit entry that depends on trunk propagation; failures would impact releases rather than runtime SDK behavior.

Overview
Adds a new Rokt SDK+ umbrella package (RoktSDKPlus) into the monorepo with SwiftPM + CocoaPods support (new Package.swift, RoktSDKPlus.podspec, module source, README, LICENSE), versioned in lockstep with the ecosystem and mirrored to ROKT/rokt-sdk-plus-ios.

Updates CI/release workflows to better handle SPM-only repos with no .xcodeproj by resolving/building/archiving via xcodebuild from the package root, allowing per-kit skipping of example builds/tests, and extending pod lib lint include podspecs from the kit matrix.

Extends release automation to bump RoktSDKPlus.version, support per-kit dest_org for mirroring/token generation, and adds a shared wait_for_pod_version_on_trunk helper (plus an extra wait for mParticle-Rokt before publishing RoktSDKPlus) to reduce CocoaPods propagation flakes; docs/changelog are updated accordingly.

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[github-actions]

📦 SDK Size Impact Report

Measures how much the SDK adds to an app's size (with-SDK minus without-SDK).

Metric	Target Branch	This PR	Change
App Bundle Impact	1.75 MB	1.75 MB	+N/A
Executable Impact	848 bytes	848 bytes	+N/A
XCFramework Size	6.42 MB	6.42 MB	+N/A

➡️ SDK size impact change is minimal.

Raw measurements

Target branch (main):

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1880,"with_sdk_executable_size_bytes":76312,"sdk_impact_kb":1796,"sdk_executable_impact_bytes":848,"xcframework_size_kb":6576}

This PR:

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1880,"with_sdk_executable_size_bytes":76312,"sdk_impact_kb":1796,"sdk_executable_impact_bytes":848,"xcframework_size_kb":6576}

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