feat: Add campaign comments functionality with API support and database migration

.vscode/ftp-kr.sync.cache.json

@@ -9,8 +9,8 @@
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@@ -71,9 +71,9 @@
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@@ -83,8 +83,8 @@
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@@ -157,8 +157,8 @@
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           "class.Clients.php": {
@@ -707,6 +707,12 @@
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         "026_cron_queue.sql": {
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@@ -719,10 +725,10 @@
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           "modified": true
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-        "026_clients_bestseller_settings.sql": {
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@@ -738,8 +744,8 @@
         "campaigns": {
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