JSON5 in dbStatic: Add lexer support for hex integers

dbLex.l accepts hex notation in JSON numbers.
Tested in dbStaticTest.db as before.

modules/database/src/ioc/dbStatic/dbLex.l

@@ -33,7 +33,10 @@ exp         ([eE]{sign}[0-9]+)
 jsonnum     ({int}{frac}?{exp}?)
 intexp      ({int}"."{exp}?)
 fracexp     ({sign}{frac}{exp}?)
-number      ({jsonnum}|{intexp}|{fracexp})
+
+zerox       ("0x"|"0X")
+hexint      ({sign}{zerox}{hexdigit}+)
+number      ({jsonnum}|{intexp}|{fracexp}|{hexint})
 
 %{
 #undef YY_INPUT

modules/database/test/ioc/db/dbStaticTest.db

@@ -17,6 +17,34 @@ record(x, "t1") {
     field(U32, +1234567)
     field(I64, +12345678)
     field(U64, +123456789)
+    field( C8, 0x1)
+    field( U8, 0x12)
+    field(I16, 0x123)
+    field(U16, 0x1234)
+    field(I32, 0x12345)
+    field(U32, 0x123456)
+    field(I64, 0x1234567)
+    field(U64, 0x12345678)
+    field( C8, +0x1)
+    field( U8, -0x12)
+    field(I16, +0x123)
+    field(U16, -0x1234)
+    field(I32, +0x12345)
+    field(U32, -0x123456)
+    field(I64, +0x1234567)
+    field(U64, -0x12345678)
+    field( C8, 0x7f)
+    field( U8, 0xff)
+    field(I16, 0x7fff)
+    field(I16, -0x8000)
+    field(U16, 0xffff)
+    field(I32, 0x7fffffff)
+    field(I32, -0x80000000)
+    field(U32, 0xffffffff)
+    field(I64, 0x7fffffffffffffff)
+    field(I64, -0x8000000000000000)
+    field(U64, 0xffffffffffffffff)
+
     field(F32, .123)
     field(F64, .123)
     field(F32, 123.)