Backport #27103 by @JakobDev

Part of #27065

Co-authored-by: JakobDev <jakobdev@gmx.de>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>

Follow #24654 #22705 #24232

In some pages we still have missing badges, for example:

![image](https://github.com/go-gitea/gitea/assets/18380374/f57fae6d-95ad-4996-8881-160c9cd27768)

![image](https://github.com/go-gitea/gitea/assets/18380374/11e86d43-b715-4d14-bdf0-51bf8b5c7b01)

![image](https://github.com/go-gitea/gitea/assets/18380374/61c514e7-d8f6-4c93-a61f-60604619e3a7)

Result of running `perl -p -i -e 's#interface\{\}#any#g' **/*` and `make fmt`.

Basically the same [as golang did](2580d0e08d).

Replace #16455

Close #21803

Mixing different Gitea contexts together causes some problems:

1. Unable to respond proper content when error occurs, eg: Web should
respond HTML while API should respond JSON
2. Unclear dependency, eg: it's unclear when Context is used in
APIContext, which fields should be initialized, which methods are
necessary.


To make things clear, this PR introduces a Base context, it only
provides basic Req/Resp/Data features.

This PR mainly moves code. There are still many legacy problems and
TODOs in code, leave unrelated changes to future PRs.

Thanks to @trwnh

Close #23802

The ActivityPub id is an HTTPS URI that should remain constant, even if
the user changes their name.

Fixes https://github.com/go-gitea/gitea/issues/22676

Context Data `IsOrganizationMember` and `IsOrganizationOwner` is used to
control the visibility of `people` and `team` tab.

2871ea0809/templates/org/menu.tmpl (L19-L40)

And because of the reuse of user projects page, User Context is changed
to Organization Context. But the value of `IsOrganizationMember` and
`IsOrganizationOwner` are not being given.

I reused func `HandleOrgAssignment` to add them to the ctx, but may have
some unnecessary variables, idk whether it is ok.

I found there is a missing `PageIsViewProjects` at create project page.

Fix #13405

<img width="1151" alt="image"
src="https://user-images.githubusercontent.com/81045/209442911-7baa3924-c389-47b6-b63b-a740803e640e.png">

Co-authored-by: 6543 <6543@obermui.de>

Change all license headers to comply with REUSE specification.

Fix #16132

Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>

* Move almost all functions' parameter db.Engine to context.Context
* remove some unnecessary wrap functions

This PR adds a middleware which sets a ContextUser (like GetUserByParams before) in a single place which can be used by other methods. For routes which represent a repo or org the respective middlewares set the field too.

Also fix a bug in modules/context/org.go during refactoring.