chore: update feature request, process, and docs templates (#5410)

* chore: update FR template

* chore: add documentation and process request templates

* fix template

.github/ISSUE_TEMPLATE/documentation_request.yaml

@@ -0,0 +1,53 @@
+name: Documentation Requests
+description: Requests for more information
+body:
+  - type: markdown
+    attributes:
+      value: >
+        Please use this issue type to log documentation requests against the library itself.
+        These requests should involve documentation on Github, and should relate to the library
+        itself, not to any APIs. If you have questions or documentation requests for an API, please
+        reach out to the API tracker itself.
+
+        Please submit an issue to the API team, either by submitting an
+        issue in its issue tracker https://cloud.google.com/support/docs/issue-trackers), or by
+        submitting an issue in its linked tracker in the .repo-metadata.json
+        file in the API under packages/* ([example](https://github.com/googleapis/google-cloud-node/blob/58419684469e3900146c8e830543bf4dc0cbb2be/packages/google-cloud-batch/.repo-metadata.json#L6)).
+        You can also submit a request to documentation on cloud.google.com itself with the "Send Feedback"
+        on the bottom of the page.
+
+
+        Please note that documentation requests and questions for specific APIs
+        will be closed.
+  - type: checkboxes
+    attributes:
+      label: Please make sure you have searched for information in the following
+        guides.
+      options:
+        - label: "Search the issues already opened:
+            https://github.com/GoogleCloudPlatform/google-cloud-node/issues"
+          required: true
+        - label: "Check our Troubleshooting guide:
+            https://googlecloudplatform.github.io/google-cloud-node/#/docs/guid\
+            es/troubleshooting"
+          required: true
+        - label: "Check our FAQ:
+            https://googlecloudplatform.github.io/google-cloud-node/#/docs/guid\
+            es/faq"
+          required: true
+        - label: "Check our libraries HOW-TO:
+            https://github.com/googleapis/gax-nodejs/blob/main/client-libraries\
+            .md"
+          required: true
+        - label: "Check out our authentication guide:
+            https://github.com/googleapis/google-auth-library-nodejs"
+          required: true
+        - label: "Check out handwritten samples for many of our APIs:
+            https://github.com/GoogleCloudPlatform/nodejs-docs-samples"
+          required: true
+  - type: textarea
+    attributes:
+      label: >
+        Documentation Request
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -0,0 +1,52 @@
+name: Feature Request
+description: Suggest an idea for this library
+labels:
+  - feature request
+body:
+  - type: markdown
+    attributes:
+      value: >
+        **PLEASE READ**: If you have a support contract with Google, please
+        create an issue in the [support
+        console](https://cloud.google.com/support/) instead of filing on GitHub.
+        This will ensure a timely response. Otherwise, please make sure to
+        follow the steps below.
+  - type: textarea
+    attributes:
+      label: >
+        A screenshot that you have tested with "Try this API".
+      description: > 
+        As our client libraries are mostly autogenerated, we kindly request
+        that you test whether your feature request is with the client library, or with the
+        API itself. To do so, please search for your API
+        here: https://developers.google.com/apis-explorer and attempt to
+        reproduce the issue in the given method. Please include a screenshot of
+        the response in "Try this API". This response should NOT match the current
+        behavior you are experiencing. If the behavior is the same, it means
+        that you are likely requesting a feature for the API itself. In that
+        case, please submit an issue to the API team, either by submitting an
+        issue in its issue tracker https://cloud.google.com/support/docs/issue-trackers), or by
+        submitting an issue in its linked tracker in the .repo-metadata.json
+        file in the API under packages/* ([example](https://github.com/googleapis/google-cloud-node/blob/58419684469e3900146c8e830543bf4dc0cbb2be/packages/google-cloud-batch/.repo-metadata.json#L6))
+
+         Examples of common library-specific issues vs. API issues are: retry strategies, authentication questions, issues with typings. 
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: >
+        What would you like to see in the library?
+      description: >
+        Screenshots can be provided in the issue body below.
+      placeholder: |
+        1. Set up authentication like so
+        2. Run the program like so
+        3. X would be nice to happen
+
+  - type: textarea
+    attributes:
+      label: Describe alternatives you've considered
+
+  - type: textarea
+    attributes:
+      label: Additional context/notes

.github/ISSUE_TEMPLATE/process_request.md

@@ -0,0 +1,5 @@
+---
+name: Process Request
+about: Submit a process request to the library. Process requests are any requests related to library infrastructure, including CI/CD, publishing, releasing, etc. This issue template should primarily used by internal members.
+
+---