[PM-17562] API For Organization Integrations/Configurations, Refactored Distributed Events, Slack Integration (#5654)

* [PM-17562] Slack Event Investigation

* Refactored Slack and Webhook integrations to pull configurations dynamically from a new Repository

* Added new TemplateProcessor and added/updated unit tests

* SlackService improvements, testing, integration configurations

* Refactor SlackService to use a dedicated model to parse responses

* Refactored SlackOAuthController to use SlackService as an injected dependency; added tests for SlackService

* Remove unnecessary methods from the IOrganizationIntegrationConfigurationRepository

* Moved Slack OAuth to take into account the Organization it's being stored for. Added methods to store the top level integration for Slack

* Organization integrations and configuration database schemas

* Format EF files

* Initial buildout of basic repositories

* [PM-17562] Add Dapper Repositories For Organization Integrations and Configurations

* Update Slack and Webhook handlers to use new Repositories

* Update SlackOAuth tests to new signatures

* Added EF Repositories

* Update handlers to use latest repositories

* [PM-17562] Add Dapper and EF Repositories For Ogranization Integrations and Configurations

* Updated with changes from PR comments

* Adjusted Handlers to new repository method names; updated tests to naming convention

* Adjust URL structure; add delete for Slack, add tests

* Added Webhook Integration Controller

* Add tests for WebhookIntegrationController

* Added Create/Delete for  OrganizationIntegrationConfigurations

* Prepend ConnectionTypes into IntegrationType so we don't run into issues later

* Added Update to OrganizationIntegrationConfigurtionController

* Moved Webhook-specific integration code to being a generic controller for everything but Slack

* Removed delete from SlackController - Deletes should happen through the normal Integration controller

* Fixed SlackController, reworked OIC Controller to use ids from URL and update the returned object

* Added parse/type checking for integration and integration configuration JSONs, Cleaned up GlobalSettings to remove old values

* Cleanup and fixes for Azure Service Bus support

* Clean up naming on TemplateProcessorTests

* Address SonarQube warnings/suggestions

* Expanded test coverage; Cleaned up tests

* Respond to PR Feedback

* Rename TemplateProcessor to IntegrationTemplateProcessor

---------

Co-authored-by: Matt Bishop <mbishop@bitwarden.com>

src/Core/AdminConsole/Models/Slack/SlackApiResponse.cs

@@ -0,0 +1,57 @@
+
+using System.Text.Json.Serialization;
+
+namespace Bit.Core.Models.Slack;
+
+public abstract class SlackApiResponse
+{
+    public bool Ok { get; set; }
+    [JsonPropertyName("response_metadata")]
+    public SlackResponseMetadata ResponseMetadata { get; set; } = new();
+    public string Error { get; set; } = string.Empty;
+}
+
+public class SlackResponseMetadata
+{
+    [JsonPropertyName("next_cursor")]
+    public string NextCursor { get; set; } = string.Empty;
+}
+
+public class SlackChannelListResponse : SlackApiResponse
+{
+    public List<SlackChannel> Channels { get; set; } = new();
+}
+
+public class SlackUserResponse : SlackApiResponse
+{
+    public SlackUser User { get; set; } = new();
+}
+
+public class SlackOAuthResponse : SlackApiResponse
+{
+    [JsonPropertyName("access_token")]
+    public string AccessToken { get; set; } = string.Empty;
+    public SlackTeam Team { get; set; } = new();
+}
+
+public class SlackTeam
+{
+    public string Id { get; set; } = string.Empty;
+}
+
+public class SlackChannel
+{
+    public string Id { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+}
+
+public class SlackUser
+{
+    public string Id { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+}
+
+public class SlackDmResponse : SlackApiResponse
+{
+    public SlackChannel Channel { get; set; } = new();
+}