Move config out of redundant sync directory

config/block.block.mainnavigation.yml

@@ -0,0 +1,31 @@
+uuid: add6196e-3612-4143-a31f-3ad79d359c0d
+langcode: en
+status: true
+dependencies:
+  config:
+    - system.menu.main
+  module:
+    - block_visibility_groups
+    - system
+  theme:
+    - agarica
+id: mainnavigation
+theme: agarica
+region: secondary_menu
+weight: 0
+provider: null
+plugin: 'system_menu_block:main'
+settings:
+  id: 'system_menu_block:main'
+  label: 'Second-level main navigation'
+  provider: system
+  label_display: '0'
+  level: 2
+  depth: 1
+  expand_all_items: false
+visibility:
+  condition_group:
+    id: condition_group
+    negate: false
+    block_visibility_group: ''
+    context_mapping: {  }