Add DAO member filtering and sorting

[optimystical]

Summary

Adds filtering and sorting controls to the DAO members section on /dao.

What changed

• Added account-name search for the currently loaded DAO members.
• Added sort options for voting power, newest members, staked EFX, staked NFX, and account name.
• Displayed each member's staked EFX and NFX values on the member card so the new sort options are visible in context.
• Preserved the existing pagination flow; loading more members adds them to the same filtered/sorted list.

Fixes #106.

Validation

• Ran git diff --check
• Reviewed the /dao data flow to confirm the sort fields reuse values already populated by getMemberInfo

Note: I could not run the Nuxt build locally because the project pins Node 14.21.3 and this environment is currently on Node 25.

[jeisses]

Could you clarify a bit the reasoning behind opening this PR?
And curious, how did you test the code if you can't build it locally?