fix: RTL localization for assets and strings

[RawanMatar89]

Describtion:

1. changed "direction" attribute for "arrowRight16" image in "Core/Assets" from attribute inspector.
2. localize "chevron.right" system image that used in:
   CourseButton
   HandoutsView
   CourseStructureView
   CourseVerticalView
   CourseDatesView
   DiscussionTopicsView
   ProfileSupportInfoView
   SettingsView
   using "flipsForRightToLeftLayoutDirection" method
3. localize "CompletionStatus" enum string by adding localized var that returns a localized string.

Screenshots:

Before	After

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[OmarIthawi]

@RawanMatar89 please check the test failures https://github.com/openedx/openedx-app-ios/actions/runs/9204972524/job/25319630671?pr=441

[Course] Compiling HandoutsView.swift
Error: value of type 'some View' has no member 'resizable'
                    .resizable()
                     ^~~~~~~~~
[Course] Compiling DiscussionView.swift
[Course] Compiling Strings.swift
[Course] Compiling CalendarSyncProgressView.swift
[Course] Compiling DownloadsView.swift
[Course] Compiling DatesSuccessView.swift
[Course] Compiling CourseHeaderView.swift
[Course] Compiling CourseDatesView.swift
Error: static method 'buildExpression' requires that 'Spacer' conform to 'AccessibilityRotorContent'
                        Spacer()
                        ^
Error: value of type 'some View' has no member 'resizable'
                            .resizable()
                             ^~~~~~~~~
Error: cannot infer contextual base in reference to member 'iconOnly'
                            .labelStyle(.iconOnly)
                                        ~^~~~~~~~
Warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 11.0, but the range of supported deployment target versions is 12.0 to 17.4.99. (in target 'SwiftLint' from project 'Pods')

[OmarIthawi]

@RawanMatar89 please rebase over openedx:develop, resolve conflicts and fix failing tests mentioned in #441 (comment)

[OmarIthawi]

Please remove the extra line here.

[OmarIthawi]

Thanks @RawanMatar89. The pull request looks good to me (as a non iOS engineer).

Please mark it as "Ready for review".

@volodymyr-chekyrta kindly triage this PR and let us know if you have any quesations.

[volodymyr-chekyrta]

LGTM

[openedx-webhooks]

@RawanMatar89 🎉 Your pull request was merged! Please take a moment to answer a two question survey so we can improve your experience in the future.

[volodymyr-chekyrta]

@RawanMatar89, thank you for your contribution!