Format mix task info messages to improve readability

lib/mix/tasks/music_library/prod/db_migrate.ex

@@ -11,7 +11,7 @@ defmodule Mix.Tasks.MusicLibrary.Prod.DbMigrate do
 
   @impl Mix.Task
   def run(_args) do
-    Mix.Shell.IO.info("Running migrations on production database")
+    Mix.Shell.IO.info("==> Running migrations on production database")
 
     fly_ssh("bin/migrate")
   end

lib/mix/tasks/music_library/prod/db_pull.ex

@@ -10,7 +10,7 @@ defmodule Mix.Tasks.MusicLibrary.Prod.DbPull do
 
   @impl Mix.Task
   def run(_args) do
-    Mix.Shell.IO.info("Pulling the latest database from the production server")
+    Mix.Shell.IO.info("==> Pulling the latest database from the production server")
 
     current_time = DateTime.utc_now()
     remote_db = "/mnt/music_library/music_library_prod.db"
@@ -22,9 +22,9 @@ defmodule Mix.Tasks.MusicLibrary.Prod.DbPull do
         System.halt(1)
 
       {_stream, 0} ->
-        Mix.Shell.IO.info("Database pulled successfully")
+        Mix.Shell.IO.info("==> Database pulled successfully")
 
-        Mix.Shell.IO.info("Restoring as local dev database")
+        Mix.Shell.IO.info("==> Restoring as local dev database")
 
         Path.wildcard("data/music_library_dev.db*")
         |> Enum.each(&File.rm!/1)

lib/mix/tasks/music_library/prod/db_vacuum.ex

@@ -12,7 +12,7 @@ defmodule Mix.Tasks.MusicLibrary.Prod.DbVacuum do
 
   @impl Mix.Task
   def run(_args) do
-    Mix.Shell.IO.info("Running VACUUM on the production database")
+    Mix.Shell.IO.info("==> Running VACUUM on the production database")
 
     command = ~s(bin/music_library rpc 'MusicLibrary.Repo.vacuum\(\)')
 

lib/mix/tasks/music_library/prod/ping.ex

@@ -8,7 +8,7 @@ defmodule Mix.Tasks.MusicLibrary.Prod.Ping do
   @impl Mix.Task
   def run(_args) do
     Application.ensure_all_started(:req)
-    Mix.Shell.IO.info("Pinging the production instance")
+    Mix.Shell.IO.info("==> Pinging the production instance")
 
     Req.get!("https://music-library.claudio-ortolina.org/api")
   end