Add routes to allow git actions on snippet repositories

What does this MR do?

In this MR we implement the following:

• Refactors the git_http routes because, for now, snippet repositories won't support LFS (mainly because lfs_enabled is a project feature and we have to think if we could enable it by default for personal snippets).
• It also updates the GitHttpController(s) and the SSH internal API to allow basic cloning/pushing/pulling operations for resources other than projects.

Refs #39176 (closed) Closes #205666 (closed)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Separation of EE specific content

app/controllers/profiles/active_sessions_controller.rb

@@ -4,4 +4,13 @@ class Profiles::ActiveSessionsController < Profiles::ApplicationController
   def index
     @sessions = ActiveSession.list(current_user).reject(&:is_impersonated)
   end
+
+  def destroy
+    ActiveSession.destroy_with_public_id(current_user, params[:id])
+
+    respond_to do |format|
+      format.html { redirect_to profile_active_sessions_url, status: :found }
+      format.js { head :ok }
+    end
+  end
 end