Pull request

Description

To make API easier, AnalyticsConfig.sourceKey has been transformed to an enum type.

val config = AnalyticsConfig(
    vendor = AnalyticsConfig.Vendor.SRG,
    nonLocalizedApplicationName = "Pillarbox",
    appSiteName = "pillarbox-demo-android",
    sourceKey = SourceKey.SRG_DEBUG,
    userConsent = initialUserConsent
)

Changes made

• Introduce SourceKey enum.
• Old constants are depreciated.

Checklist

• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).