Database updates (#144)

* start moving some database stuff around

* continue moving db stuff around

* more fiddling

* more updates

* and some more

* and yet more

* i broke SOMETHING but what, it's a mystery

* tidy up

* vendor ttlcache

* use ttlcache

* fix up some tests

* rename some stuff

* little reminder

* some more updates

internal/db/pg/put.go

@@ -1,33 +0,0 @@
-/*
-   GoToSocial
-   Copyright (C) 2021 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 pg
-
-import (
-	"strings"
-
-	"github.com/superseriousbusiness/gotosocial/internal/db"
-)
-
-func (ps *postgresService) Put(i interface{}) error {
-	_, err := ps.conn.Model(i).Insert(i)
-	if err != nil && strings.Contains(err.Error(), "duplicate key value violates unique constraint") {
-		return db.ErrAlreadyExists{}
-	}
-	return err
-}