Codebase documentation improvements

[akornich]

Codebase documentation improvements

docs: resolve #122 - Update RollbarCommon public API doc comments so they are properly rendered by Xcode Quick Help
docs: resolve #124 - Update RollbarDeploys public API doc comments so they are properly rendered by Xcode Quick Help
docs: resolve #126 - Update RollbarSwift, RollbarAUL, RollbarPLCrashReporter, and RollbarKSCrash public API doc comments so they are properly rendered by Xcode Quick Help
docs: resolve #127 - Update RollbarNotifier public API doc comments so they are properly rendered by Xcode Quick Help
chore: resolve #114 - Consolidate destination parameters for samples
chore: resolve #113 - Consolidate destination parameters for unit tests

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This discussion was created from the release Codebase documentation improvements.