feat(resvg): upgrade to Resvg 0.44 with substantial rust code refactor

- Updated rust code to accommodate significant architectural changes in Resvg
0.44, including shifts in functionality between resvg and usvg, and reworking
of text rendering mechanics.
- The upgrade addresses a specific bug found when rendering <tspan> elements
inside <text>.
- Rewrote tests, moving away from md5 checksum comparison for PNG output.
- Introduced a new snapshot testing approach using the Approval library, which simplifies test management and improves test reliability.

Author: tmbb

lib/resvg.ex

@@ -57,7 +57,7 @@ defmodule Resvg do
   `out_png` must be a path to a non-existent file.
   `opts` refer to [options](#module-common-options)
 
-  The functions return `:ok` in case of success. Otherise, it returns 
+  The functions return `:ok` in case of success. Otherise, it returns
   `{:error, reason}` if an error occurs.
 
   ## Examples
@@ -86,7 +86,7 @@ defmodule Resvg do
   `opts` refer to [options](#module-common-options) must at least set the
   `resources_dir` key to a valid path.
 
-  The functions return `:ok` in case of success. Otherise, it returns 
+  The functions return `:ok` in case of success. Otherise, it returns
   `{:error, reason}` if an error occurs.
 
   ## Examples
@@ -115,7 +115,7 @@ defmodule Resvg do
   `opts` refer to [options](#module-common-options) must at least set the
   `resources_dir` key to a valid path.
 
-  The functions return `{:ok, buffer}` in case of success. Otherise, it returns 
+  The functions return `{:ok, buffer}` in case of success. Otherise, it returns
   `{:error, reason}` if an error occurs.
 
   ## Examples
@@ -142,7 +142,7 @@ defmodule Resvg do
   `opts` refer to [options](#module-common-options) must at least set the
   `resources_dir` key to a valid path.
 
-  The functions return `{:ok, fonts_list}` in case of success. Otherise, it returns 
+  The functions return `{:ok, fonts_list}` in case of success. Otherise, it returns
   `{:error, reason}` if an error occurs.
 
   ## Examples
@@ -162,8 +162,7 @@ defmodule Resvg do
 
   `opts` refer to [options](#module-common-options)
 
-  The functions return `{:ok, fonts_list}` in case of success. Otherise, it returns 
-  `{:error, reason}` if an error occurs.
+  The functions return a list of `%Rsvg.Native.Node{}`s.
 
   ## Examples
 

mix.exs

@@ -29,7 +29,8 @@ defmodule Resvg.MixProject do
     [
       {:rustler_precompiled, "~> 0.8.1"},
       {:rustler, "~> 0.34.0", optional: true},
-      {:ex_doc, ">= 0.0.0", only: :dev, runtime: false}
+      {:ex_doc, ">= 0.0.0", only: :dev, runtime: false},
+      {:approval, "~> 0.1", only: :test}
     ]
   end
 

mix.lock

@@ -1,4 +1,5 @@
 %{
+  "approval": {:hex, :approval, "0.1.0", "b5614f405c6cffdf516d199b7acf3f25828610f06d80b60faf8f97f9e1735326", [:mix], [], "hexpm", "9c5a44250266b801190ee970d208de21975fac447c3dae9907a0242464efcb2e"},
   "castore": {:hex, :castore, "1.0.8", "dedcf20ea746694647f883590b82d9e96014057aff1d44d03ec90f36a5c0dc6e", [:mix], [], "hexpm", "0b2b66d2ee742cb1d9cb8c8be3b43c3a70ee8651f37b75a8b982e036752983f1"},
   "earmark_parser": {:hex, :earmark_parser, "1.4.39", "424642f8335b05bb9eb611aa1564c148a8ee35c9c8a8bba6e129d51a3e3c6769", [:mix], [], "hexpm", "06553a88d1f1846da9ef066b87b57c6f605552cfbe40d20bd8d59cc6bde41944"},
   "ex_doc": {:hex, :ex_doc, "0.34.1", "9751a0419bc15bc7580c73fde506b17b07f6402a1e5243be9e0f05a68c723368", [:mix], [{:earmark_parser, "~> 1.4.39", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "d441f1a86a235f59088978eff870de2e815e290e44a8bd976fe5d64470a4c9d2"},