[chore] bump go structr cache version -> v0.6.0 (#2773)

* update go-structr library -> v0.6.0, add necessary wrapping types + code changes to support these changes

* update readme with go-structr package changes

* improved wrapping of the SliceCache type

* add code comments for the cache wrapper types

* remove test.out :innocent:

---------

Co-authored-by: tobi <31960611+tsmethurst@users.noreply.github.com>

1 files changed, 0 insertions, 52 deletions

diff --git a/internal/cache/slice.go b/internal/cache/slice.go
deleted file mode 100644
index 0a7a6ccdc..000000000
--- a/internal/cache/slice.go
+++ /dev/null
@@ -1,52 +0,0 @@
-// GoToSocial
-// Copyright (C) GoToSocial Authors admin@gotosocial.org
-// SPDX-License-Identifier: AGPL-3.0-or-later
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package cache
-
-import (
-	"slices"
-
-	"codeberg.org/gruf/go-cache/v3/simple"
-)
-
-// SliceCache wraps a simple.Cache to provide simple loader-callback
-// functions for fetching + caching slices of objects (e.g. IDs).
-type SliceCache[T any] struct {
-	*simple.Cache[string, []T]
-}
-
-// Load will attempt to load an existing slice from the cache for the given key, else calling the provided load function and caching the result.
-func (c *SliceCache[T]) Load(key string, load func() ([]T, error)) ([]T, error) {
-	// Look for follow IDs list in cache under this key.
-	data, ok := c.Get(key)
-
-	if !ok {
-		var err error
-
-		// Not cached, load!
-		data, err = load()
-		if err != nil {
-			return nil, err
-		}
-
-		// Store the data.
-		c.Set(key, data)
-	}
-
-	// Return data clone for safety.
-	return slices.Clone(data), nil
-}