Enable logging and debug of nodemailer (#190)

This should help A LOT to let people understand
why things go wrong in this action when talking to the mailhost

README.md

@@ -60,6 +60,10 @@ Some features:
     attachments: attachments.zip,git.diff,./dist/static/*.js
     # Optional priority: 'high', 'normal' (default) or 'low'
     priority: low
+    # Optional nodemailerlog: true/false
+    nodemailerlog: false
+    # Optional nodemailerdebug: true/false if true lognodem will also be set true
+    nodemailerdebug: false
 ```
 
 ## Troubleshooting

action.yml

@@ -57,6 +57,12 @@ inputs:
   priority:
     description: Set Priority level for the mail message to 'high', 'normal' (default) or 'low'
     required: false
+  nodemailerlog:
+    description: Log option for nodemailer
+    required: false
+  nodemailerdebug:
+    description: Debug option for nodemailer
+    required: false
 runs:
   using: node16
   main: main.js

main.js

@@ -91,6 +91,8 @@ async function main() {
         const convertMarkdown = core.getInput("convert_markdown", { required: false })
         const ignoreCert = core.getInput("ignore_cert", { required: false })
         const priority = core.getInput("priority", { required: false })
+        const nodemailerlog = core.getInput("nodemailerlog", { required: false })
+        const nodemailerdebug = core.getInput("nodemailerdebug", { required: false })
 
         // if neither to, cc or bcc is provided, throw error
         if (!to && !cc && !bcc) {
@@ -112,6 +114,8 @@ async function main() {
             tls: ignoreCert == "true" ? {
                 rejectUnauthorized: false
             } : undefined,
+            logger: nodemailerdebug == "true" ? true : nodemailerlog,
+            debug: nodemailerdebug,
         })
 
         const info = await transport.sendMail({