Merge pull request #162 from FederatedAI/dev-2.2.0

Merge v2.2.0's Updates Into Main Branch

Merge pull request #159 from FederatedAI/dev-2.1.2

Update V2.1.2, Fix Import Problem

Merge pull request #153 from FederatedAI/dev-2.1.1

Merge 2.1.1's update Into Main Branch

Merge pull request #152 from FederatedAI/dev-2.1.0

Update 2.1.0

Merge pull request #143 from FederatedAI/dev-2.0.0-rc

Update cli doc

Merge pull request #105 from FederatedAI/dev-2.0.0-beta

Update 2.0.0-beta

rename fateflow to fate_flow in cli init

Signed-off-by: mgqa34 <[email protected]>