Changes for directly adding new routes

[Shriya Tyagi]

Add the addNewRoute and fallback functions so that we can add a new route directly via calling addNewRoute on the main contract instead of re-deploying the main contract.

Additional function to add -
addNewRoutesAndEnable , updateRouteImplementations, changeRouteStatus, getEnabledRoutes

Chains-

• Arbitrum
• Avalanche
• Fantom
• Mainnet
• Optimism