rc: Add commands to set GC Percent & Memory Limit (1.19+)

Signed-off-by: Anagh Kumar Baranwal <6824881+darthShadow@users.noreply.github.com>

lib/debug/common.go

@@ -0,0 +1,12 @@
+// Package debug contains functions for dealing with runtime/debug functions across go versions
+package debug
+
+import (
+	"runtime/debug"
+)
+
+// SetGCPercent calls the runtime/debug.SetGCPercent function to set the garbage
+// collection percentage.
+func SetGCPercent(percent int) int {
+	return debug.SetGCPercent(percent)
+}

lib/debug/go1.19.go

@@ -0,0 +1,14 @@
+//go:build go1.19
+// +build go1.19
+
+package debug
+
+import (
+	"runtime/debug"
+)
+
+// SetMemoryLimit calls the runtime/debug.SetMemoryLimit function to set the
+// soft-memory limit.
+func SetMemoryLimit(limit int64) (int64, error) {
+	return debug.SetMemoryLimit(limit), nil
+}

lib/debug/go1.19_compat.go

@@ -0,0 +1,14 @@
+//go:build !go1.19
+// +build !go1.19
+
+package debug
+
+import (
+	"fmt"
+	"runtime"
+)
+
+// SetMemoryLimit is a no-op on Go version < 1.19.
+func SetMemoryLimit(limit int64) (int64, error) {
+	return limit, fmt.Errorf("not implemented on Go version below 1.19: %s", runtime.Version())
+}