Add Phoenix LiveDashboard

Co-authored-by: Egor Kislitsyn <egor@kislitsyn.com>

mix.exs

@@ -79,6 +79,7 @@ defmodule Pleroma.Mixfile do
         :comeonin,
         :quack,
         :fast_sanitize,
+        :os_mon,
         :ssl
       ],
       included_applications: [:ex_syslogger]
@@ -129,7 +130,7 @@ defmodule Pleroma.Mixfile do
       {:trailing_format_plug, "~> 0.0.7"},
       {:fast_sanitize, "~> 0.2.0"},
       {:html_entities, "~> 0.5", override: true},
-      {:phoenix_html, "~> 2.14"},
+      {:phoenix_html, "~> 3.1", override: true},
       {:calendar, "~> 1.0"},
       {:cachex, "~> 3.2"},
       {:poison, "~> 3.0", override: true},
@@ -197,6 +198,8 @@ defmodule Pleroma.Mixfile do
        ref: "289cda1b6d0d70ccb2ba508a2b0bd24638db2880"},
       {:eblurhash, "~> 1.1.0"},
       {:open_api_spex, "~> 3.10"},
+      {:phoenix_live_dashboard, "~> 0.6.2"},
+      {:ecto_psql_extras, "~> 0.6"},
 
       # indirect dependency version override
       {:plug, "~> 1.10.4", override: true},