Normative: Add new numbering system "kawi" and "nagm"

Adding tests for https://github.com/tc39/ecma402/pull/714

harness/testIntl.js

@@ -2138,6 +2138,7 @@ function allNumberingSystems() {
     "jpanfin",
     "jpanyear",
     "kali",
+    "kawi",
     "khmr",
     "knda",
     "lana",
@@ -2159,6 +2160,7 @@ function allNumberingSystems() {
     "mymr",
     "mymrshan",
     "mymrtlng",
+    "nagm",
     "native",
     "newa",
     "nkoo",
@@ -2242,6 +2244,7 @@ var numberingSystemDigits = {
   hmnp: "𞅀𞅁𞅂𞅃𞅄𞅅𞅆𞅇𞅈𞅉",
   java: "꧐꧑꧒꧓꧔꧕꧖꧗꧘꧙",
   kali: "꤀꤁꤂꤃꤄꤅꤆꤇꤈꤉",
+  kawi: "\u{11F50}\u{11F51}\u{11F52}\u{11F53}\u{11F54}\u{11F55}\u{11F56}\u{11F57}\u{11F58}\u{11F59}",
   khmr: "០១២៣៤៥៦៧៨៩",
   knda: "೦೧೨೩೪೫೬೭೮೯",
   lana: "᪀᪁᪂᪃᪄᪅᪆᪇᪈᪉",
@@ -2250,6 +2253,7 @@ var numberingSystemDigits = {
   latn: "0123456789",
   lepc: "᱀᱁᱂᱃᱄᱅᱆᱇᱈᱉",
   limb: "\u1946\u1947\u1948\u1949\u194A\u194B\u194C\u194D\u194E\u194F",
+  nagm: "\u{1E4F0}\u{1E4F1}\u{1E4F2}\u{1E4F3}\u{1E4F4}\u{1E4F5}\u{1E4F6}\u{1E4F7}\u{1E4F8}\u{1E4F9}",
   mathbold: "𝟎𝟏𝟐𝟑𝟒𝟓𝟔𝟕𝟖𝟗",
   mathdbl: "𝟘𝟙𝟚𝟛𝟜𝟝𝟞𝟟𝟠𝟡",
   mathmono: "𝟶𝟷𝟸𝟹𝟺𝟻𝟼𝟽𝟾𝟿",