feat: support grouping by any path for arch package (#4903)

Previous arch package grouping was not well-suited for complex or multi-architecture environments. It now supports the following content:

- Support grouping by any path.
- New support for packages in `xz` format.
- Fix clean up rules

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## Draft release notes
<!--URL:https://codeberg.org/forgejo/forgejo-->
- Features
  - [PR](https://codeberg.org/forgejo/forgejo/pulls/4903): <!--number 4903 --><!--line 0 --><!--description c3VwcG9ydCBncm91cGluZyBieSBhbnkgcGF0aCBmb3IgYXJjaCBwYWNrYWdl-->support grouping by any path for arch package<!--description-->
<!--end release-notes-assistant-->

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/4903
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Exploding Dragon <explodingfkl@gmail.com>
Co-committed-by: Exploding Dragon <explodingfkl@gmail.com>

modules/packages/arch/metadata_test.go

@@ -158,11 +158,12 @@ checkdepend = ola
 makedepend = cmake
 backup = usr/bin/paket1
 `
-	p, err := ParsePackageInfo(strings.NewReader(PKGINFO))
+	p, err := ParsePackageInfo("zst", strings.NewReader(PKGINFO))
 	require.NoError(t, err)
 	require.Equal(t, Package{
-		Name:    "a",
-		Version: "1-2",
+		CompressType: "zst",
+		Name:         "a",
+		Version:      "1-2",
 		VersionMetadata: VersionMetadata{
 			Base:         "b",
 			Description:  "comment",
@@ -417,8 +418,9 @@ dummy6
 `
 
 	md := &Package{
-		Name:    "zstd",
-		Version: "1.5.5-1",
+		CompressType: "zst",
+		Name:         "zstd",
+		Version:      "1.5.5-1",
 		VersionMetadata: VersionMetadata{
 			Base:         "zstd",
 			Description:  "Zstandard - Fast real-time compression algorithm",