feat(Insights): add anonymous usage data collection (#3543)

* feat(insights): initial code (WIP)

* feat(insights): add more info

* feat(insights): add fs info

* feat(insights): export insights.Data

Signed-off-by: Deluan <deluan@navidrome.org>

* feat(insights): more config info

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor(insights): move data struct to its own package

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor(insights): omit some attrs if empty

Signed-off-by: Deluan <deluan@navidrome.org>

* feat(insights): send insights to server, add option to disable

Signed-off-by: Deluan <deluan@navidrome.org>

* fix(insights): remove info about anonymous login

Signed-off-by: Deluan <deluan@navidrome.org>

* chore(insights): fix lint

Signed-off-by: Deluan <deluan@navidrome.org>

* fix(insights): disable collector if EnableExternalServices is false

Signed-off-by: Deluan <deluan@navidrome.org>

* fix(insights): fix type casting for 32bit platforms

Signed-off-by: Deluan <deluan@navidrome.org>

* fix(insights): remove EnableExternalServices from the collection (as it will always be false)

Signed-off-by: Deluan <deluan@navidrome.org>

* chore(insights): fix lint

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor(insights): rename function for consistency

Signed-off-by: Deluan <deluan@navidrome.org>

* feat(insights): log the data sent to the collector server

Signed-off-by: Deluan <deluan@navidrome.org>

* feat(insights): add last collection timestamp to the "about" dialog.

Also add opt-out info to the SignUp form

Signed-off-by: Deluan <deluan@navidrome.org>

* feat(insights): only sends the initial data collection after an admin user is created

Signed-off-by: Deluan <deluan@navidrome.org>

* feat(insights): remove dangling comment

Signed-off-by: Deluan <deluan@navidrome.org>

* feat(insights): Translate insights messages

Signed-off-by: Deluan <deluan@navidrome.org>

* fix(insights): reporting empty library

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor: move URL to consts.js

Signed-off-by: Deluan <deluan@navidrome.org>

---------

Signed-off-by: Deluan <deluan@navidrome.org>

ui/src/i18n/en.json

@@ -214,7 +214,8 @@
       "password": "Password",
       "sign_in": "Sign in",
       "sign_in_error": "Authentication failed, please retry",
-      "logout": "Logout"
+      "logout": "Logout",
+      "insightsCollectionNote": "Navidrome collects anonymous usage data to\nhelp improve the project. Click [here] to learn\nmore and to opt-out if you want"
     },
     "validation": {
       "invalidChars": "Please only use letters and numbers",
@@ -435,7 +436,8 @@
     "links": {
       "homepage": "Home page",
       "source": "Source code",
-      "featureRequests": "Feature requests"
+      "featureRequests": "Feature requests",
+      "lastInsightsCollection": "Last insights collection"
     }
   },
   "activity": {