[Provider Context] Introduce a new extrinsic `propose_to_add_application`

[saraswatpuneet]

Details

With respect to provider context design doc, complete the following: Refer design doc

• Add a new extrinsic propose_to_add_application that receives a ProviderRegistryEntry type payload from provider MSA
• Ensure the origin is registered provider
• Add a new state ProviderToApplicationRegistry douple map (ProviderId, ApplicationIndex) to store a new application once a goverance proposal is approved for application, where ApplicationIndex is monotically increasing number for each provider level application from 0..N
• Move all the approves hashes from payload to ApprovedLogoHashes state
• Benchmark new extrinsic
• Add unit tests and e2e tests

Acceptance Criteria

1. Ability to propose and add new applications
2. ApprovedHashes successfully contains approved logo hashes from 1
3. Tests emulating range of tests for adding and approving applications for providers
4. Benchmarking and e2e tests