Added basic structure for local storage

Description

Implement persistence storage generic code. Here we are using shared preference to store the local cache.

Technical details

Local storage consists of PersistedItem and PersistedConfiguration. PersistedItem: Class mostly focus on generic implementation for Shared Preference. PersistedItem supports Int, Boolean, and String as a datatype. PersistedConfiguration: The PersistedConfiguration class is a helper to access properties. All the properties are maintained in the enum class as PersistenceKey. Using PersistenceKey properties can be set/get via the PersistedConfiguration class. E.g. Set the persistent property - context.configurations.updateInstallAuto = true Get the persistent property - val isUpdateInstallAuto = context.configurations.updateInstallAuto

Tests

AndroidJunit test cases are present for this implementation. Below are the scenarios to cover.

1. Check called methods return correct datatypes. - Done
2. On setting a new value return the latest value from properties - Done
3. In case of storing Json string, accessor/mutator extension should work - Done

Issues

https://gitlab.e.foundation/e/os/backlog/-/issues/1347

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