[FIX] issue templates (#637)

* impl [github] - new YAML issue template

* impl [github] - new YAML feature request template

* refactor [github] - titles

* fix [bug_report] - url formatting

Co-authored-by: Theodor <theodor@xanadu.ai>

* fix [feature_request] - url formatting

Co-authored-by: Theodor <theodor@xanadu.ai>

* fix [github] - issue template: indentation

* fix [github] - issue_template: id without whitespaces

Co-authored-by: Theodor <theodor@xanadu.ai>

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -59,12 +59,12 @@ body:
     validations:
       required: true
   - type: markdown
-    id: source code and tracebacks
+    id: source-code-and-tracebacks
     attributes:
       value: |
-      ## source code and tracebacks
+        ## source code and tracebacks
 
-      Any additional code snippets and error tracebacks related to the issue?
+        Any additional code snippets and error tracebacks related to the issue?
   - type: textarea
     id: sourcecode
     attributes:
@@ -78,8 +78,8 @@ body:
       description: Please include the error tracebacks related to the issue here. This will be automatically formatted into code, so no need for backticks.
       render: shell
   - type: textarea
-    id: additional info
+    id: additional-info
     attributes:
       label:  Additional information
       description: Please include any additional information, configuration or data that might be necessary to reproduce the issue.
-      render: shell
+      render: shell