Addition of the new bug_report.yml issue template

Signed-off-by: Florent Poinsard <florent.poinsard@outlook.fr>

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,88 @@
+name: Bug Report
+description: You're experiencing an issue with Vitess that is different than the documented behavior.
+title: ""
+labels: ["Type: Bug", "Needs Triage"]
+body:
+  - type: textarea
+    id: overview-of-the-issue
+    attributes:
+      label: Overview of the Issue
+      description: A paragraph or two about the issue you're experiencing.
+      placeholder: Tell us what you see!
+      value: ""
+    validations:
+      required: true
+
+  - type: textarea
+    id: reproduction-steps
+    attributes:
+      label: Reproduction Steps
+      description: A paragraph or two about the issue you're experiencing.
+      placeholder: |
+        1. Deploy the following `vschema`:
+          ```javascript
+          {
+            "sharded": true,
+            "vindexes": {
+              "hash": {
+                "type": "hash"
+              },
+            "tables": {
+              "user": {
+                "column_vindexes": [
+                  {
+                    "column": "user_id",
+                    "name": "hash"
+                  }
+                ]
+              }
+            }
+          }
+          ```
+        2. Deploy the following `schema`:
+            ```sql
+            create table user(user_id bigint, name varchar(128), primary key(user_id));
+            ```
+        3. Run `SELECT...`
+        4. View error
+      value: ""
+      render: markdown
+    validations:
+      required: true
+
+  - type: textarea
+    id: binary-version
+    attributes:
+      label: Binary Version
+      description: Tell us which version of Vitess you're using.
+      placeholder: |
+        example:
+        ```sh
+        giaquinti@workspace:~$ vtgate --version
+        Version: a95cf5d (Git branch 'HEAD') built on Fri May 18 16:54:26 PDT 2018 by giaquinti@workspace using go1.10 linux/amd64
+        ```
+      value: ""
+      render: shell
+    validations:
+      required: true
+
+  - type: textarea
+    id: os-and-env
+    attributes:
+      label: Operating System and Environment details
+      description: OS, Architecture, and any other information you can provide about the environment.
+      placeholder: |
+        - Operating system (output of `cat /etc/os-release`)
+        - Kernel version (output of `uname -sr`)
+        - Architecture (output of `uname -m`)
+      value: ""
+      render: shell
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Log Fragments
+      description: Include appropriate log fragments. If the log is longer than a few dozen lines, please include the URL to the [gist](https://gist.github.com/) of the log instead of posting it in the issue. This will be automatically formatted into code, so no need for backticks.
+      render: shell