feat: Update formatter to handle negative numbers and withSign option

[cgero-eth]

Description

• Update formatter to handle withSign option
• Allow every format to be customised

TODO:

• Waiting okay from product

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• I have selected the correct base branch.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• Any dependent changes have been merged and published in downstream modules.
• I ran all tests with success and extended them if necessary.
• I have updated the CHANGELOG.md file in the root folder of the package after the [UPCOMING] title and before
  the latest version.
• I have tested my code on the test network.

[github-actions]

Storybook IPFS Hash: QmV9gfCMnRDDpyMvawXQZVbhQDYnaTbNMVPT8dyfwSgXPB
ODS deployed to https://ipfs.eth.aragon.network/ipfs/QmV9gfCMnRDDpyMvawXQZVbhQDYnaTbNMVPT8dyfwSgXPB/

[Fabricevladimir]

Thanks, LGTM 👍🏾