Move votes partials to components

We're going to change the code quite a bit, and with components we can
easily extract methods when necessary.

app/components/proposals/votes_component.rb

@@ -0,0 +1,10 @@
+class Proposals::VotesComponent < ApplicationComponent
+  attr_reader :proposal, :vote_url, :proposal_votes
+  delegate :current_user, :link_to_verify_account, :user_signed_in?, :voted_for?, to: :helpers
+
+  def initialize(proposal, vote_url:, proposal_votes:)
+    @proposal = proposal
+    @vote_url = vote_url
+    @proposal_votes = proposal_votes
+  end
+end