add lazy withFilter() method for efficient compilation of for-comprehensions with if guard

Author: alokkumardalei-wq

core/src/main/scala/cats/FunctorFilter.scala

@@ -91,12 +91,14 @@ trait FunctorFilter[F[_]] extends Serializable {
     mapFilter(fa)(Some(_).filterNot(f))
 }
 
-object FunctorFilter extends ScalaVersionSpecificTraverseFilterInstances with FunctorFilterInstances0 {
+object FunctorFilter
+    extends ScalaVersionSpecificTraverseFilterInstances
+    with FunctorFilterInstances0 {
 
   /** A lazy wrapper supporting Scala `for`-comprehensions.
     */
   class WithFilter[F[_], A](fa: F[A], p: A => Boolean)(implicit
-    F: FunctorFilter[F]
+      F: FunctorFilter[F]
   ) {
     def map[B](f: A => B): F[B] =
       F.mapFilter(fa)(a => if (p(a)) Some(f(a)) else None)
@@ -116,21 +118,22 @@ object FunctorFilter extends ScalaVersionSpecificTraverseFilterInstances with Fu
     cats.instances.vector.catsStdTraverseFilterForVector
   implicit def catsFunctorFilterForMap[K]: FunctorFilter[Map[K, *]] =
     cats.instances.map.catsStdFunctorFilterForMap[K]
-  implicit def catsTraverseFilterForSortedMap[K]: TraverseFilter[SortedMap[K, *]] =
+  implicit def catsTraverseFilterForSortedMap[K]
+      : TraverseFilter[SortedMap[K, *]] =
     cats.instances.sortedMap.catsStdTraverseFilterForSortedMap[K]
   implicit def catsTraverseFilterForQueue: TraverseFilter[Queue] =
     cats.instances.queue.catsStdTraverseFilterForQueue
 
   /** Summon an instance of [[FunctorFilter]] for `F`.
     */
   @inline def apply[F[_]](implicit
-    instance: FunctorFilter[F]
+      instance: FunctorFilter[F]
   ): FunctorFilter[F] = instance
 
   @deprecated("Use cats.syntax object imports", "2.2.0")
   object ops {
     implicit def toAllFunctorFilterOps[F[_], A](
-      target: F[A]
+        target: F[A]
     )(implicit tc: FunctorFilter[F]): AllOps[F, A] {
       type TypeClassType = FunctorFilter[F]
     } =
@@ -159,7 +162,7 @@ object FunctorFilter extends ScalaVersionSpecificTraverseFilterInstances with Fu
   trait AllOps[F[_], A] extends Ops[F, A]
   trait ToFunctorFilterOps extends Serializable {
     implicit def toFunctorFilterOps[F[_], A](
-      target: F[A]
+        target: F[A]
     )(implicit tc: FunctorFilter[F]): Ops[F, A] {
       type TypeClassType = FunctorFilter[F]
     } =