Take manifest hash into consideration during resolve process

[njlr]

We have a few cases:

• There is not an existing lock-file :arrow_right: Resolve :heavy_check_mark:

• There is an existing lock-file, but it is malformed :arrow_right: Throw an error, suggest the user deletes the lock-file and tries buckaroo resolve again. :x:

• There is a lock-file, but the manifest hash is stale :arrow_right: Resolve :heavy_check_mark:

• There is a lock-file, but the manifest hash is up-to-date :arrow_right: We are already done. :heavy_check_mark:

[njlr]

https://github.com/LoopPerfect/buckaroo/pull/243