feat: update build url to @username/workspace/builds/buildnumber (#2234)

* update build url to @username/workspace/builds/buildnumber

* update errors thrown from the API

* add unit tests for the new API

* add t.parallel

* get username and workspace name from params

coderd/database/queries/workspacebuilds.sql

@@ -27,6 +27,15 @@ WHERE
 	workspace_id = $1
 	AND "name" = $2;
 
+-- name: GetWorkspaceBuildByWorkspaceIDAndBuildNumber :one
+SELECT
+	*
+FROM
+	workspace_builds
+WHERE
+	workspace_id = $1
+	AND build_number = $2;
+
 -- name: GetWorkspaceBuildByWorkspaceID :many
 SELECT
 	*