Add initial tracings + a few startup optimizations.

[ychescale9]

Add initial tracing calls:

• OkHttpClient creation
• ApolloClient creation
• Coil ImageLoader creation
• Home screen feed list
• SyncWorker#doWork

Optimizations:

• remove redundant additional OkHttpClient creation when initializing ImageLoader
• remove httpEngine configuration in ApolloClient creation to use injected Call.Factory instead of the default one created by the httpEngine DSL that takes timeout
• remove unnecessary FeedSyncEngine injection in KSApp
• add initial delay for SyncWorker request to avoid worker initialization during startup

Currently OkHttpClient initialization happens early in the main thread as ApolloClient.Builder#okHttpCallFactory is eager.

The initialization can be deferred and moved to a background thread once apollographql/apollo-kotlin#5784 is released.

Latest startup benchmark results:

StartupBenchmark_startupCompilationBaselineProfiles
timeToFullDisplayMs      min 412.7,   median 439.2,   max 614.2
timeToInitialDisplayMs   min 374.0,   median 394.1,   max 473.0

StartupBenchmark_startupCompilationNone
timeToFullDisplayMs      min 485.9,   median 503.5,   max 698.6
timeToInitialDisplayMs   min 404.9,   median 415.2,   max 467.0