Add Type.isTupleType to reflection API

Author: pikinier20

compiler/src/scala/quoted/runtime/impl/QuotesImpl.scala

@@ -1738,6 +1738,8 @@ class QuotesImpl private (using val ctx: Context) extends Quotes, QuoteUnpickler
           val tpNoRefinement = self.dropDependentRefinement
           tpNoRefinement != self
           && dotc.core.Symbols.defn.isNonRefinedFunction(tpNoRefinement)
+        def isTupleType: Boolean =
+          dotc.core.Symbols.defn.isTupleType(self)
         def select(sym: Symbol): TypeRepr = self.select(sym)
         def appliedTo(targ: TypeRepr): TypeRepr =
           dotc.core.Types.decorateTypeApplications(self).appliedTo(targ)

library/src/scala/quoted/Quotes.scala

@@ -2526,6 +2526,12 @@ trait Quotes { self: runtime.QuoteUnpickler & runtime.QuoteMatching =>
         */
         def isDependentFunctionType: Boolean
 
+        /** Is this type a tuple type?
+        *
+        * @return true if the dealiased type of `self` without refinement is `TupleN[T1, T2, ..., Tn]`
+        */
+        def isTupleType: Boolean
+
         /** The type <this . sym>, reduced if possible */
         def select(sym: Symbol): TypeRepr