Move DurationSign from ECMA-402 and use real Duration objects

DurationSign no longer needs to be defined by Temporal, as it's now part
of ECMA-402. However, when Temporal becomes part of ECMA-262, we do need
to move DurationSign into ECMA-262. Put it in a <del> block in intl.html.
We can keep the new definition in its current place in the spec while
adjusting its ID.

Once Temporal.Duration objects are introduced, there is no longer any need
for Duration Records. So, make the ECMA-402 DurationSign accept a
Temporal.Duration object (as it already did in Temporal), delete the
ToDurationRecord operation and the Duration Record definition, and change
several other operations from ECMA-402 to use Temporal.Duration objects
instead of Duration Records.

Temporarily, since these operations aren't yet in ecma402-biblio pending
tc39/ecma402#943, add a JSON bibliography file so
the references aren't dangling.

Author: ptomato

spec.html

@@ -6,6 +6,7 @@
 contributors: Maggie Pint, Matt Johnson, Brian Terlson, Daniel Ehrenberg, Philipp Dunkel, Sasha Pierson, Ujjwal Sharma, Philip Chimento, Justin Grant
 markEffects: true
 </pre>
+<emu-biblio href="spec/biblio.json"></emu-biblio>
 
 <emu-intro id="sec-temporal-intro">
   <h1>Introduction</h1>

spec/biblio.json

@@ -0,0 +1,37 @@
+[
+  {
+    "location": "https://tc39.es/ecma402/",
+    "entries": [
+      {
+        "type": "op",
+        "aoid": "FormatNumericHours",
+        "id": "sec-formatnumerichours"
+      },
+      {
+        "type": "op",
+        "aoid": "FormatNumericMinutes",
+        "id": "sec-formatnumericminutes"
+      },
+      {
+        "type": "op",
+        "aoid": "FormatNumericSeconds",
+        "id": "sec-formatnumericseconds"
+      },
+      {
+        "type": "op",
+        "aoid": "NextUnitFractional",
+        "id": "sec-nextunitfractional"
+      },
+      {
+        "type": "op",
+        "aoid": "ListFormatParts",
+        "id": "sec-listformatparts"
+      },
+      {
+        "type": "clause",
+        "number": "Table 21",
+        "id": "table-partition-duration-format-pattern"
+      }
+    ]
+  }
+]

spec/duration.html

@@ -1096,10 +1096,10 @@ <h1>
       </emu-alg>
     </emu-clause>
 
-    <emu-clause id="sec-temporal-durationsign" type="abstract operation">
+    <emu-clause id="sec-durationsign" type="abstract operation">
       <h1>
         DurationSign (
-          _duration_: a Temporal.Duration,
+          _duration_: a <del>Duration Record</del><ins>Temporal.Duration</ins>,
         ): -1, 0, or 1
       </h1>
       <dl class="header">