Added main file server.Server and assembly for flat jars

.gitignore

@@ -25,3 +25,4 @@ dependency-reduced-pom.xml
 logs/
 .DS_Store
 data/*
+!project/assembly.sbt

build.sbt

@@ -1,10 +1,11 @@
-ThisBuild / version := "0.1.0-SNAPSHOT"
+ThisBuild / version := "0.1.1-SNAPSHOT"
 
 ThisBuild / scalaVersion := "2.13.10"
 
 lazy val root = (project in file("."))
   .settings(
-    name := "WeatherTool"
+    name := "WeatherTool",
+    Compile / mainClass := Some("server.Server")
   )
 
 val http4sVersion = "0.23.16"

project/assembly.sbt

@@ -0,0 +1 @@
+addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.15.0")