Expanded linting + fix warnings (#1396)

* Expand the linters and types of warnings to improve consistency and safety

* Fail lint workflow if there are errors

* golint has been replaced by revive

* Hand-pick some of the default exclude list

* Ignore error when trying to delete preview gif

* Ignore linter warning opening playlist path

* Rename user field Id -> ID

* A bunch of renames to address linter warnings

* Rename ChatClient -> Client per linter suggestion best practice

* Rename ChatServer -> Server per linter suggestion best practice

* More linter warning fixes

* Add missing comments to all exported functions and properties

core/webhooks/chat.go

@@ -5,6 +5,7 @@ import (
 	"github.com/owncast/owncast/models"
 )
 
+// SendChatEvent will send a chat event to webhook destinations.
 func SendChatEvent(chatEvent *events.UserMessageEvent) {
 	webhookEvent := WebhookEvent{
 		Type: chatEvent.GetMessageType(),
@@ -12,7 +13,7 @@ func SendChatEvent(chatEvent *events.UserMessageEvent) {
 			User:      chatEvent.User,
 			Body:      chatEvent.Body,
 			RawBody:   chatEvent.RawBody,
-			ID:        chatEvent.Id,
+			ID:        chatEvent.ID,
 			Visible:   chatEvent.HiddenAt == nil,
 			Timestamp: &chatEvent.Timestamp,
 		},
@@ -21,6 +22,7 @@ func SendChatEvent(chatEvent *events.UserMessageEvent) {
 	SendEventToWebhooks(webhookEvent)
 }
 
+// SendChatEventUsernameChanged will send a username changed event to webhook destinations.
 func SendChatEventUsernameChanged(event events.NameChangeEvent) {
 	webhookEvent := WebhookEvent{
 		Type:      models.UserNameChanged,

core/webhooks/stream.go

@@ -8,6 +8,7 @@ import (
 	"github.com/teris-io/shortid"
 )
 
+// SendStreamStatusEvent will send all webhook destinations the current stream status.
 func SendStreamStatusEvent(eventType models.EventType) {
 	SendEventToWebhooks(WebhookEvent{
 		Type: eventType,

core/webhooks/webhooks.go

@@ -14,11 +14,13 @@ import (
 	"github.com/owncast/owncast/models"
 )
 
+// WebhookEvent represents an event sent as a webhook.
 type WebhookEvent struct {
 	Type      models.EventType `json:"type"` // messageSent | userJoined | userNameChange
 	EventData interface{}      `json:"eventData,omitempty"`
 }
 
+// WebhookChatMessage represents a single chat message sent as a webhook payload.
 type WebhookChatMessage struct {
 	User      *user.User `json:"user,omitempty"`
 	Body      string     `json:"body,omitempty"`
@@ -28,6 +30,7 @@ type WebhookChatMessage struct {
 	Timestamp *time.Time `json:"timestamp,omitempty"`
 }
 
+// SendEventToWebhooks will send a single webhook event to all webhook destinations.
 func SendEventToWebhooks(payload WebhookEvent) {
 	webhooks := data.GetWebhooksForEvent(payload.Type)