Move routes to app

[nickvergessen]

• Depends on Allow some apps to have root URLs in their own routing file server#20114
• Might require Fix settings routing server#20591 in case some pages dont load

[nickvergessen]

needs merging now as otherwise the call/ urls don't work anymore on latest master

[danxuliu]

Tested (with nextcloud/server#20591) and works 👍

[nickvergessen]

Merged now, so merging this

[nickvergessen]

The integration tests is a failure on server master:

{
  "Exception": "OCP\\Files\\ForbiddenException",
  "Message": "Invalid path",
  "Code": 0,
  "Trace": [
    {
      "file": "/home/nickv/Nextcloud/19/server/lib/private/Files/Storage/Local.php",
      "line": 159,
      "function": "getSourcePath",
      "class": "OC\\Files\\Storage\\Local",
      "type": "->",
      "args": [
        "/.htaccess"
      ]
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/lib/private/Files/Storage/Common.php",
      "line": 879,
      "function": "getMetaData",
      "class": "OC\\Files\\Storage\\Local",
      "type": "->",
      "args": [
        "/.htaccess"
      ]
    },
    {
      "function": "getDirectoryContent",
      "class": "OC\\Files\\Storage\\Common",
      "type": "->",
      "args": [
        ""
      ]
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/lib/private/Files/Cache/Scanner.php",
      "line": 408,
      "function": "iterator_to_array",
      "args": [
        {
          "__class__": "Generator"
        }
      ]
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/lib/private/Files/Cache/Scanner.php",
      "line": 388,
      "function": "handleChildren",
      "class": "OC\\Files\\Cache\\Scanner",
      "type": "->",
      "args": [
        "",
        false,
        3,
        16,
        true,
        0
      ]
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/lib/private/Files/Cache/Scanner.php",
      "line": 340,
      "function": "scanChildren",
      "class": "OC\\Files\\Cache\\Scanner",
      "type": "->",
      "args": [
        "",
        false,
        3,
        16,
        true
      ]
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/lib/private/Files/View.php",
      "line": 1338,
      "function": "scan",
      "class": "OC\\Files\\Cache\\Scanner",
      "type": "->",
      "args": [
        "",
        false
      ]
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/lib/private/Files/View.php",
      "line": 1382,
      "function": "getCacheEntry",
      "class": "OC\\Files\\View",
      "type": "->",
      "args": [
        {
          "cache": {
            "__class__": "OC\\Files\\Cache\\Cache"
          },
          "scanner": {
            "__class__": "OC\\Files\\Cache\\Scanner"
          },
          "watcher": null,
          "propagator": null,
          "updater": null,
          "__class__": "OCA\\Files_Trashbin\\Storage"
        },
        "",
        ""
      ]
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/lib/private/Files/Node/Node.php",
      "line": 100,
      "function": "getFileInfo",
      "class": "OC\\Files\\View",
      "type": "->",
      "args": [
        "/"
      ]
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/lib/private/Files/Node/Node.php",
      "line": 342,
      "function": "getFileInfo",
      "class": "OC\\Files\\Node\\Node",
      "type": "->",
      "args": []
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/appsbabies/spreed/lib/Files/Util.php",
      "line": 206,
      "function": "isShared",
      "class": "OC\\Files\\Node\\Node",
      "type": "->",
      "args": []
    },
    {
      "file": "/home/nickv/Nextcloud/19/server/appsbabies/spreed/lib/Files/Util.php",
      "line": 133,
      "function": "getAnyDirectShareOfNodeAccessibleByUser",
      "class": "OCA\\Talk\\Files\\Util",
      "type": "->",
      "args": [
        {
          "__class__": "OC\\Files\\Node\\Root"
        },
        "participant1"
      ]
    },

So asking whether the root is shared, scans it and does boom when you try to scan .htaccess.... great fun
Regression from nextcloud/server#20232 (comment) (reverting that commit fixes it) so not directly related to talk => merging