[#378] feat: add hash and validation of the metadata

[MSzalowski]

List of changes

Co-delivered with @Sworzen1

• Information storage steps #364
  • Submit governance action transaction
• add hash and validation of the metadata [Hash and validation of the metadata #378]
• fix number validation on ga form
• fix bech32 validation on ga form
• restyle modal to match the latest designs (as of 12/03/24) which is:
  • full-width buttons (that will be applicable to the other modals as well)
  • add cancel and feedback buttons
• In Progress state of a propose governance action card (Create a Propose a Governance Action card #379)

What is not included in this PR

• feedback button is not implemented yet as it requires different usersnap implementation (based on react not GTM)
• link on a modal is not displayed below the description as it would destroy other modals
• user hash is not compared in validation function as it will be delivered via different issue (which makes the validation always faulty on this delivery)

Checklist

• related issue
• My changes generate no new warnings
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the changelog
• I have added tests that prove my fix is effective or that my feature works

[JanJaroszczak]

i'd arrange alphabetically the keys within 'modals'.

[JanJaroszczak]

I'd add this error message and the others above to en.ts as we already have some errors there.

[MSzalowski]

It is not displayed to the end user