Simplify SBT build and fix docs generation (#456)

* These settings aren't needed anymore

They're automatically provided by `sbt-github`

* Remove unused method

* This is the new way of preventing module publishing

* Use new `project` macro for creating new projects

This macro will use the `val` name as the expected folder and `moduleName`

* We need to add `mdocIn` for project docs

* Not needed (already provided by `sbt-github-mdoc`)

* The root module is auto-created by SBT, only need to skip publishing

* Launch scalafmtSbt

build.sbt

@@ -1,43 +1,36 @@
 addCommandAlias("ci-test", "+scalafmtCheck; +scalafmtSbtCheck; +docs/mdoc; +test")
 addCommandAlias("ci-docs", "project-docs/mdoc; headerCreateAll")
 
-lazy val root = (project in file("."))
-  .settings(moduleName := "github4s-root")
-  .aggregate(github4s)
-  .dependsOn(github4s)
-  .settings(noPublishSettings: _*)
+skip in publish := true
 
-lazy val github4s =
-  (project in file("github4s"))
-    .settings(moduleName := "github4s")
-    .enablePlugins(BuildInfoPlugin)
-    .settings(
-      buildInfoKeys := Seq[BuildInfoKey](
-        name,
-        version,
-        "token" -> sys.env.getOrElse("GITHUB_TOKEN", "")
-      ),
-      buildInfoPackage := "github4s"
-    )
-    .settings(coreDeps: _*)
+lazy val github4s = project
+  .enablePlugins(BuildInfoPlugin)
+  .settings(
+    buildInfoKeys := Seq[BuildInfoKey](
+      name,
+      version,
+      "token" -> sys.env.getOrElse("GITHUB_TOKEN", "")
+    ),
+    buildInfoPackage := "github4s"
+  )
+  .settings(coreDeps: _*)
 
 //////////
 // DOCS //
 //////////
 
-lazy val docs = (project in file("docs"))
+lazy val docs = project
   .aggregate(github4s)
   .dependsOn(github4s)
-  .settings(moduleName := "github4s-docs")
   .settings(micrositeSettings: _*)
-  .settings(noPublishSettings: _*)
+  .settings(skip in publish := true)
   .enablePlugins(MicrositesPlugin)
 
 lazy val `project-docs` = (project in file(".docs"))
   .aggregate(github4s)
   .dependsOn(github4s)
   .settings(moduleName := "github4s-project-docs")
-  .settings(mdocVariables += "NAME" -> "github4s")
+  .settings(mdocIn := file(".docs"))
   .settings(mdocOut := file("."))
-  .settings(noPublishSettings: _*)
+  .settings(skip in publish := true)
   .enablePlugins(MdocPlugin)

project/ProjectPlugin.scala

@@ -30,13 +30,6 @@ object ProjectPlugin extends AutoPlugin {
       val silencer: String   = "1.6.0"
     }
 
-    lazy val noPublishSettings = Seq(
-      publish := ((): Unit),
-      publishLocal := ((): Unit),
-      publishArtifact := false,
-      publishMavenStyle := false // suppress warnings about intransitive deps (not published anyway)
-    )
-
     lazy val micrositeSettings = Seq(
       micrositeName := "Github4s",
       micrositeDescription := "Github API wrapper written in Scala",
@@ -92,25 +85,13 @@ object ProjectPlugin extends AutoPlugin {
       })
     )
 
-    def toCompileTestList(sequence: Seq[ProjectReference]): List[String] = sequence.toList.map {
-      p =>
-        val project: String = p.asInstanceOf[LocalProject].project
-        s"$project/test"
-    }
   }
 
   import autoImport.V
 
   override def projectSettings: Seq[Def.Setting[_]] =
     Seq(
-      name := "github4s",
       organization := "com.47deg",
-      organizationName := "47 Degrees",
-      organizationHomepage := Some(url("https://www.47deg.com")),
-      homepage := Option(url("https://47degrees.github.io/github4s/")),
-      description := "Github API wrapper written in Scala",
-      startYear := Option(2016),
-      resolvers += Resolver.sonatypeRepo("snapshots"),
       crossScalaVersions := Seq(V.scala212, V.scala213),
       scalacOptions := {
         val withStripedLinter = scalacOptions.value filterNot Set("-Xlint", "-Xfuture").contains