[chore] The Big Middleware and API Refactor (tm) (#1250)

* interim commit: start refactoring middlewares into package under router

* another interim commit, this is becoming a big job

* another fucking massive interim commit

* refactor bookmarks to new style

* ambassador, wiz zeze commits you are spoiling uz

* she compiles, we're getting there

* we're just normal men; we're just innocent men

* apiutil

* whoopsie

* i'm glad noone reads commit msgs haha :blob_sweat:

* use that weirdo go-bytesize library for maxMultipartMemory

* fix media module paths

internal/api/security/flocblock.go

@@ -1,31 +0,0 @@
-/*
-   GoToSocial
-   Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
-
-   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 security
-
-import "github.com/gin-gonic/gin"
-
-// FlocBlock is a middleware that prevents google chrome cohort tracking by
-// writing the Permissions-Policy header after all other parts of the request
-// have been completed. Floc was replaced by Topics in 2022 and the spec says
-// that interest-cohort will also block Topics (as of 2022-Nov).
-// See: https://smartframe.io/blog/google-topics-api-everything-you-need-to-know
-// See: https://github.com/patcg-individual-drafts/topics
-func (m *Module) FlocBlock(c *gin.Context) {
-	c.Header("Permissions-Policy", "browsing-topics=()")
-}