Allow setting iOS Bundle id for Variant

[GMinucci]

What does this PR do

Allows user to set the BundleID for a specific variant.

Extra changes

• Moved signing validation from Configuration to the iOSVariant object itself.
• Fixed typo with a misleading instruction present in the variants config file template
• Clean up BB Team ID from test data

How can it be tested

AC 1:
GIVEN I want to fully customize my app variant BundleID
WHEN I add the key bundle_id to the variant config
AND I run switch command to the specific variant
THEN I should see my app with the exact BundleID as configured

AC 2:
GIVEN I added both bundle_id and id_suffix to my variant config
WHEN I run switch command to the specific variant
THEN I should get an error as both configs are not compatible at same time

Task

Resolves #159

Checklist:

• I ran make validation locally with success
• I have not introduced new bugs
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new errors

[ghost]

	Warnings
⚠️	Pull request is relatively big. If this PR contains multiple changes, consider splitting it into separate PRs for easier reviews.

Generated by 🚫 Danger Swift against 02ad852

[codecov]

Codecov Report

Merging #173 (02ad852) into develop (2a0bec8) will increase coverage by 0.56%.
The diff coverage is 98.93%.

@@             Coverage Diff             @@
##           develop     #173      +/-   ##
===========================================
+ Coverage    71.90%   72.46%   +0.56%     
===========================================
  Files           36       36              
  Lines         1242     1264      +22     
  Branches       441      451      +10     
===========================================
+ Hits           893      916      +23     
+ Misses         309      308       -1     
  Partials        40       40              

Impacted Files	Coverage Δ
...riantsCore/Factory/FastlaneParametersFactory.swift	55.40% <0.00%> (ø)
...VariantsCore/Custom Types/Project/iOSProject.swift	79.28% <100.00%> (ø)
...es/VariantsCore/Schemas/iOS/iOSConfiguration.swift	100.00% <100.00%> (ø)
Sources/VariantsCore/Schemas/iOS/iOSVariant.swift	100.00% <100.00%> (+1.92%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 2a0bec8...02ad852. Read the comment docs.

[gderaco]

PR is approved by 2 people, yet it can't be merged because a build hasn't started, therefore cannot report its completion.