Switch from Converse v10.1.6 to upstream (unreleased v11):

* various WIP to change the Converse version

conversejs/custom/templates/background_logo.js

@@ -5,7 +5,7 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import { html } from 'lit'
-import { api } from '@converse/headless/core.js'
+import { api } from '@converse/headless/index.js'
 
 export default () => html`
     <div class="inner-content converse-brand row">

conversejs/custom/templates/livechat-external-login-modal.js

@@ -2,7 +2,7 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-only
 
-import { _converse, api } from '@converse/headless/core'
+import { _converse, api } from '@converse/headless'
 import { __ } from 'i18n'
 import { html } from 'lit'
 

conversejs/custom/templates/muc-bottom-panel.js

@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import { __ } from 'i18n'
-import { _converse, api } from '@converse/headless/core'
+import { _converse, api } from '@converse/headless'
 import { html } from 'lit'
 import tplMucBottomPanel from '../../src/plugins/muc-views/templates/muc-bottom-panel.js'
 import { CustomElement } from 'shared/components/element.js'

conversejs/custom/templates/muc-chatarea.js

@@ -2,7 +2,7 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-only
 
-import { api } from '@converse/headless/core'
+import { api } from '@converse/headless'
 import tplMUCChatarea from '../../src/plugins/muc-views/templates/muc-chatarea.js'
 import { html } from 'lit'
 

conversejs/custom/templates/muc-head.js

@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import { html } from 'lit'
-import { api } from '@converse/headless/core'
+import { api } from '@converse/headless'
 import { until } from 'lit/directives/until.js'
 import { repeat } from 'lit/directives/repeat.js'
 import { unsafeHTML } from 'lit/directives/unsafe-html.js'