Add package in front of class to avoid compiler confusion

Scala 2.13 hets confused when deciding which class to import so in some cases we have to also specify the package.

For example, in the following case the compiler thinks we are trying to use `com.google.api.ads.admanager.axis.v202108.CustomTargetingService`.

```
[error] /Users/ioanna_kokkini/Projects/frontend/admin/app/dfp/DataMapper.scala:47:36: value targetingKey is not a member of com.google.api.ads.admanager.axis.v202108.CustomTargetingService
[error]             customTargetingService.targetingKey(session)(criterion.getKeyId),
[error]
```

So we have to explicitly add the package in front of the class we are trying to use. Instead of:

```
class DataMapper(
    adUnitService: AdUnitService,
    placementService: PlacementService,
    customTargetingService: CustomTargetingService,
    customFieldService: CustomFieldService,
)
```

we do:

```
class DataMapper(
    adUnitService: AdUnitService,
    placementService: dfp.PlacementService,
    customTargetingService: dfp.CustomTargetingService,
    customFieldService: dfp.CustomFieldService,
)
```

Co-authored-by: Roberto Tyley <roberto.tyley@guardian.co.uk>

admin/app/dfp/DataMapper.scala

@@ -7,9 +7,9 @@ import dfp.ApiHelper.{isPageSkin, optJavaInt, toJodaTime, toSeq}
 // These mapping functions use libraries that are only available in admin to create common DFP data models.
 class DataMapper(
     adUnitService: AdUnitService,
-    placementService: PlacementService,
-    customTargetingService: CustomTargetingService,
-    customFieldService: CustomFieldService,
+    placementService: dfp.PlacementService,
+    customTargetingService: dfp.CustomTargetingService,
+    customFieldService: dfp.CustomFieldService,
 ) {
 
   def toGuAdUnit(dfpAdUnit: AdUnit): GuAdUnit = {

applications/app/crosswords/CrosswordPage.scala

@@ -27,7 +27,7 @@ class CrosswordPageWithContent(content: CrosswordContent) extends ContentPage {
   override lazy val item = content
   val crossword = content.crossword
 
-  import CrosswordSvg.{BorderSize, CellSize}
+  import crosswords.CrosswordSvg.{BorderSize, CellSize}
 
   case class SvgDimensions(width: Int, height: Int) {
     def styleString: String = s"width: $width; height: $height"

common/app/model/content.scala

@@ -403,7 +403,7 @@ object Content {
     val metadata = MetaData.make(fields, apiContent)
     val elements = Elements.make(apiContent)
     val tags = Tags.make(apiContent)
-    val commercial = Commercial.make(tags, apiContent)
+    val commercial = model.Commercial.make(tags, apiContent)
     val trail = Trail.make(tags, fields, commercial, elements, metadata, apiContent)
     val sharelinks = ShareLinks(tags, fields, metadata)
     val atoms = Atoms.make(apiContent, sharelinks.pageShares)

common/test/model/ContentTest.scala

@@ -60,7 +60,7 @@ class ContentTest
       elements = Some(elements),
     )
 
-    val trail: ContentType = Content(content)
+    val trail: model.ContentType = Content(content)
 
     trail.fields.linkText should be("Some article")
     trail.metadata.url should be("/foo/2012/jan/07/bar")
@@ -162,7 +162,7 @@ class ContentTest
 
   it should "returns the correct shortUrlId (gu.com)" in {
 
-    def contentWithShortUrl(shortUrl: String): ContentType =
+    def contentWithShortUrl(shortUrl: String): model.ContentType =
       Content(article.copy(fields = Some(ContentFields(shortUrl = Some(shortUrl)))))
 
     contentWithShortUrl("http://gu.com/p/3r1b5").fields.shortUrlId should be("/p/3r1b5")
@@ -171,7 +171,7 @@ class ContentTest
 
   it should "returns the correct shortUrlId (www.theguardian.com)" in {
 
-    def contentWithShortUrl(shortUrl: String): ContentType =
+    def contentWithShortUrl(shortUrl: String): model.ContentType =
       Content(article.copy(fields = Some(ContentFields(shortUrl = Some(shortUrl)))))
 
     contentWithShortUrl("http://www.theguardian.com/p/3r1b5").fields.shortUrlId should be("/p/3r1b5")
@@ -282,7 +282,7 @@ class ContentTest
       contentType: String,
       elements: List[ApiElement],
       maybeByline: Option[String] = None,
-  ): ContentType = {
+  ): model.ContentType = {
     Content(contentApi(contentType, elements, maybeByline))
   }
 

onward/app/controllers/TaggedContentController.scala

@@ -34,7 +34,7 @@ class TaggedContentController(
 
   private def render(trails: Seq[ContentType])(implicit request: RequestHeader): Result =
     Cached(300) {
-      JsonComponent(
+      common.JsonComponent(
         "trails" -> JsArray(trails.map { trail =>
           Json.obj(
             ("webTitle", trail.metadata.webTitle),