Added blocklist updating, main nav tweaks

Implemented Oliphant's unified tier 3 blocklist and the supplementary
instance audit file that tracks how many times an instance has been
blocked by a trusted sources member. Keeping the update function manual
for now to make sure it works smooth, then well automate so it checks on
    it's on at regular intervals.

NOTE: Lists used are located at the following urls:
https://codeberg.org/oliphant/blocklists/src/branch/main/blocklists/_unified_tier3_blocklist.csv
https://codeberg.org/oliphant/blocklists/src/branch/main/blocklists/other/domain_audit_file.csv

Also simplified the main nav to just include a link to the den index
when logged in

composer.json

@@ -9,7 +9,8 @@
         "guzzlehttp/guzzle": "^7.2",
         "laravel/framework": "^10.10",
         "laravel/sanctum": "^3.2",
-        "laravel/tinker": "^2.8"
+        "laravel/tinker": "^2.8",
+        "league/csv": "^9.0"
     },
     "require-dev": {
         "fakerphp/faker": "^1.9.1",