Bing/ft watcher worker

[bingyuyap]

This PR updates the watcher code such that ft_watcher can be run

main changes:

• add ft to Mode
• add INITIAL_DEPLOYMENT_BLOCK for FT and add a reusable type called NetworkChainBlockMapping
• add map to map INITIAL_DEPLOYMENT_BLOCK to their modes
• add map to map collection name to their modes
• instead of using isNTT boolean use Mode
• update to some naming of classes and methods

db updates:

• fast_vaa_id and fast_vaa_hash to be UNIQUE as at some point in time they might be null