refactor: change collateralInjector to eModeInjector

[brotherlymite]

Changelog:

• Removes EdgeRiskStewardCollateral and adds EdgeRiskStewardEMode contract to be used by the injector to only allow eMode category updates.
• Removes AaveStewardInjectorCollateral and adds an injector for EMode AaveStewardInjectorEMode
• The AaveStewardInjectorEMode assume updateType from RiskOracle to be EModeCategoryUpdate_Core and the market address as the eModeId encoded to address. The update from RiskOracle is encoded in the following struct:

  struct EModeCategoryUpdate {
      uint256 ltv;
      uint256 liqThreshold;
      uint256 liqBonus;
    }
  

Risk Configurations:

Manual Stewards:

• EMode category update: LT: 0.1% absolute change, LTV: 0.5% absolute change, LB: 0.5% absolute change with delay of 3 days.
• Pendle discountRate: 5% relative change of discountRate with delay of 2 days

Automated Stewards for Pendle:

• EMode category update: LT: 0.5% absolute change, LTV: 0.5% absolute change, LB: 0.5% absolute change with delay of 3 days.