Update issue templates (firebase#382)

* Update issue templates

Adding two templates for easier filing.

* Delete duplicate bug report template

* Add related issue field to bug template

* Make spacing consistent

Also, changed "related issue" to "related issues"

* Update feature request template

Updates to be more consistent with firebase-tools feature request template in firebase/firebase-tools#1094

Author: thechenky

.github/ISSUE_TEMPLATE/---feature-request.md

@@ -0,0 +1,37 @@
+---
+name: "\U0001F4A1 Feature Request"
+about: Have a feature you'd like to see in the functions SDK? Request it through our
+  support channel
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!--
+Thank you for contributing to the Firebase community!
+
+Have a feature request?
+========================
+Great, we love hearing how we can improve our products! However, GitHub is not the place to submit them. Please submit your feature requests to:
+https://firebase.google.com/support/contact/bugs-features/
+
+Have a usage question?
+=======================
+We get lots of those and we love helping you, but GitHub is not the best place for them and they
+will be closed. Here are some resources to get help:
+
+- Start with the quickstart: https://firebase.google.com/docs/functions/write-firebase-functions
+- Go through the guide: https://firebase.google.com/docs/functions/
+- Read the full API reference: https://firebase.google.com/docs/reference/functions/
+- Browse some examples: https://github.com/firebase/functions-samples
+
+If the official documentation doesn't help, try asking through our official support channels:
+
+https://firebase.google.com/support/
+
+*Please avoid double posting across multiple channels!*
+
+Think you found a bug?
+=======================
+Don't use this form. Go back and select "Bug" from the issue type selection. 

.github/ISSUE_TEMPLATE/---report-a-bug.md

@@ -0,0 +1,50 @@
+---
+name: "⚠️ Report a Bug"
+about: Think you found a bug in the SDK? Report it here.
+title: ''
+labels: ''
+assignees: ''
+
+---
+### Related issues
+
+<!-- Are there any related firebase-functions issues that you found on this topic before deciding to open a new issue? Please link them here-->
+
+### [REQUIRED] Version info
+
+<!-- What versions of the following libraries are you using? Note that your issue may already
+be fixed in the latest versions. -->
+
+**node:**
+<!-- Run node --version and print the output here-->
+
+**firebase-functions:**
+
+**firebase-tools:**
+<!-- Run firebase --version and print the output here-->
+
+**firebase-admin:**
+
+### [REQUIRED] Test case
+
+<!-- Provide a minimal, complete, and verifiable example (http://stackoverflow.com/help/mcve) -->
+
+
+### [REQUIRED] Steps to reproduce
+
+<!-- Provide the steps needed to reproduce the issue given the above test case. -->
+
+
+### [REQUIRED] Expected behavior
+
+<!-- What is the expected behavior? -->
+
+
+### [REQUIRED] Actual behavior
+
+<!-- Please copy and paste any error logs from https://console.firebase.google.com/project/_/functions/logs.
+     If you're experiencing a deployment issue, please copy and paste the entirety of firebase-debug.log -->
+
+### Were you able to successfully deploy your functions?
+
+<!-- When you ran `firebase deploy`, did you see any error messages? -->