alert: Add optimizations (#939)

* alert: Add optimizations

* alert: add basic benchmarks

* alert: fix linter issue

* documentation: change to text/template as html/template escapes to protect against code injection. Add readme.md for alert.

* README: Add package name

* alert: link up with engine settings

* request: isVerbose refactor

* Update exchanges/alert/alert_test.go

Co-authored-by: Scott <gloriousCode@users.noreply.github.com>

* Update exchanges/alert/alert.go

Co-authored-by: Scott <gloriousCode@users.noreply.github.com>

* glorious: nits

* glorious: fun police

* documentation: regen

Co-authored-by: Ryan O'Hara-Reid <ryan.oharareid@thrasher.io>
Co-authored-by: Scott <gloriousCode@users.noreply.github.com>

engine/engine_types.go

@@ -60,17 +60,18 @@ type Settings struct {
 	EnableExchangeRateHost  bool
 
 	// Exchange tuning settings
-	EnableExchangeHTTPRateLimiter  bool
-	EnableExchangeHTTPDebugging    bool
-	EnableExchangeVerbose          bool
-	ExchangePurgeCredentials       bool
-	EnableExchangeAutoPairUpdates  bool
-	DisableExchangeAutoPairUpdates bool
-	EnableExchangeRESTSupport      bool
-	EnableExchangeWebsocketSupport bool
-	MaxHTTPRequestJobsLimit        int
-	TradeBufferProcessingInterval  time.Duration
-	RequestMaxRetryAttempts        int
+	EnableExchangeHTTPRateLimiter       bool
+	EnableExchangeHTTPDebugging         bool
+	EnableExchangeVerbose               bool
+	ExchangePurgeCredentials            bool
+	EnableExchangeAutoPairUpdates       bool
+	DisableExchangeAutoPairUpdates      bool
+	EnableExchangeRESTSupport           bool
+	EnableExchangeWebsocketSupport      bool
+	MaxHTTPRequestJobsLimit             int
+	TradeBufferProcessingInterval       time.Duration
+	RequestMaxRetryAttempts             int
+	AlertSystemPreAllocationCommsBuffer int // See exchanges/alert.go
 
 	// Global HTTP related settings
 	GlobalHTTPTimeout   time.Duration