[Enhancement] Use cookies on a per-source basis (#354)

* Added 'use_cookies' column to source

* Added cookies to the source form

* Updated every command to optionally include cookies

* LOTS of tests

* Made YT cookies off by default

test/pinchflat/yt_dlp/command_runner_test.exs

@@ -51,18 +51,26 @@ defmodule Pinchflat.YtDlp.CommandRunnerTest do
       {:ok, cookie_file: cookie_file, yt_dlp_file: yt_dlp_file}
     end
 
-    test "includes cookie options when cookies.txt exists", %{cookie_file: cookie_file} do
+    test "includes cookie options when cookies.txt exists and enabled", %{cookie_file: cookie_file} do
       FilesystemUtils.write_p!(cookie_file, "cookie data")
 
-      assert {:ok, output} = Runner.run(@media_url, [], "")
+      assert {:ok, output} = Runner.run(@media_url, [], "", use_cookies: true)
 
       assert String.contains?(output, "--cookies #{cookie_file}")
     end
 
+    test "doesn't include cookie options when cookies.txt exists but disabled", %{cookie_file: cookie_file} do
+      FilesystemUtils.write_p!(cookie_file, "cookie data")
+
+      assert {:ok, output} = Runner.run(@media_url, [], "", use_cookies: false)
+
+      refute String.contains?(output, "--cookies #{cookie_file}")
+    end
+
     test "doesn't include cookie options when cookies.txt blank", %{cookie_file: cookie_file} do
       FilesystemUtils.write_p!(cookie_file, " \n \n ")
 
-      assert {:ok, output} = Runner.run(@media_url, [], "")
+      assert {:ok, output} = Runner.run(@media_url, [], "", use_cookies: true)
 
       refute String.contains?(output, "--cookies")
       refute String.contains?(output, cookie_file)