feat: update progress percentage UI in accordance with w3up-client

[akhileshthite]

Use onShardStored option in uploadFile and uploadDirectory.

See how it gets used in the w3cli here:
https://github.com/web3-storage/w3cli/blob/55f546be85e321b00ddd18c8ded277935eedebde/index.js#L129C5-L129C18

See how the progress percentage UI was implemented previously in web3storage script:
Files:

dscan/src/scripts/web3Storage.js

Line 20 in b01101a

onStoredChunk: getProgressUpdater(files),

Folder:

dscan/src/scripts/web3Storage.js

Line 50 in b01101a

onStoredChunk: getProgressUpdater(updatedFiles),