feat(oracle): Introduce robust and secure IPriceFeed infrastructure

This commit finalizes the core components of the Baobab Protocol's decentralized oracle infrastructure, migrating to a unified  interface across all data sources (Chainlink, Pyth, Computed Feeds, and TWAP).

The central goal is to enhance manipulation resistance, data consistency, and security through a multi-layered validation approach enforced by the new  contract.

### Key Features and Changes:

1.  **BaobabOracleSecurity Integration:**
    * Implements a central security gateway () enforcing sequential checks: Circuit Breakers, Global Pause, Global Staleness (), and contextual risk-based Confidence checks ().
    * **Refinement:** Streamlined price fetching to rely solely on the  output, eliminating redundant internal calls and improving gas efficiency.

2.  **OracleRegistry (Assumed Role):**
    * Acknowledges the reliance on the core  to manage asset configuration (Primary/Fallback feeds) and enforce internal heartbeat/staleness logic before data is passed to the Security layer. The Registry acts as the sole source of data for the  layer.

3.  **ComputedOracle (Derived Prices):**
    * Introduced a system for deriving secondary asset prices (e.g., ETH/BTC) via multiplication or division of two base feeds.
    * **Security Fix:** Updated  logic to return the **oldest** component timestamp, preventing the computed price from falsely appearing fresh when an underlying feed is stale.
    * **Refinement:** Optimized fixed-point division math for gas efficiency while preserving 8-decimal output precision.

4.  **Oracle Adapters (Chainlink & Pyth):**
    * Created  and  to strictly conform to the  interface.
    * **Consistency:** Standardized output to 8 decimals for Pyth by implementing a robust  helper that handles variable exponents.
    * **Efficiency:** Refactored all adapters to ensure only a single external call is made per price query, drastically reducing transaction gas costs.
    * **Fail Safe:** Ensured adapters return the sentinel value () on any failure (call revert, stale data, non-positive price).

5.  **TWAPAdapter (Manipulation Resistance):**
    * Implemented a Time-Weighted Average Price (TWAP) adapter used for sensitive actions, sourcing only validated prices from .
    * **Security Principle:** The price pushing mechanism is permissionless to decentralize maintenance cost and increase data freshness.
    * **Note on Pruning:** Identified and noted the gas-inefficiency of the current  array pruning method, which is marked for a future refactor to a Ring/Circular Buffer structure for superior scalability.

Author: olujimiAdebakin