Feature: Slack - receive messages, create threads, send replies (#974)

Co-authored-by: Pranav Raj S <pranav@thoughtwoot.com>

app/views/api/v1/accounts/integrations/apps/index.json.jbuilder

@@ -1,7 +1,10 @@
-json.array! @apps do |app|
-  json.id app.id
-  json.name app.name
-  json.logo app.logo
-  json.enabled app.enabled?(@current_account)
-  json.button app.button
+json.payload do
+  json.array! @apps do |app|
+    json.id app.id
+    json.name app.name
+    json.description app.description
+    json.logo app.logo
+    json.enabled app.enabled?(@current_account)
+    json.action app.action
+  end
 end

app/views/api/v1/accounts/integrations/apps/show.json.jbuilder

@@ -4,4 +4,4 @@ json.logo @app.logo
 json.description @app.description
 json.fields @app.fields
 json.enabled @app.enabled?(@current_account)
-json.button @app.button
+json.button @app.action

app/views/api/v1/accounts/integrations/slack/create.json.jbuilder

@@ -0,0 +1,2 @@
+json.id @hook.app_id
+json.enabled true