Create Solution(Legacy_issue_template.yaml

.github/ISSUE_TEMPLATE/Solution(Legacy_issue_template.yaml

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+name: Solution(Legacy) Issue
+description: Use this template for assistance with a specific Mediapipe solution (google.github.io/mediapipe/solutions) such as "Pose", including inference model usage/training, solution-specific calculators etc.
+labels: 'type:support'
+body:
+  - type: markdown
+    id: linkmodel
+    attributes:
+      value: Please make sure that this is a [solution](https://google.github.io/mediapipe/solutions/solutions.html) issue.
+  - type: dropdown
+    id: customcode_model
+    attributes:
+      label: Have I written custom code (as opposed to using a stock example script provided in MediaPipe)
+      options:
+        - 'Yes'
+        - 'No'
+    validations:
+      required: false 
+  - type: input
+    id: os_model
+    attributes:
+      label: OS Platform and Distribution
+      placeholder: e.g. Linux Ubuntu 16.04, Android 11, iOS 14.4
+    validations:
+      required: false    
+  - type: input
+    id: mediapipe_version
+    attributes:
+      label: MediaPipe version
+    validations:
+      required: false  
+  - type: input
+    id: bazel_version
+    attributes:
+      label: Bazel version
+    validations:
+      required: false   
+  - type: input
+    id: solution
+    attributes:
+      label: Solution (e.g. C++, Python, Java)
+    validations:
+      required: false
+  - type: input
+    id: programminglang
+    attributes:
+      label: Programming Language and version (e.g. C++, Python, Java)
+    validations:
+      required: false
+  - type: textarea
+    id: current_model
+    attributes:
+      label: Describe the actual behavior
+      render: shell
+    validations:
+      required: true    
+  - type: textarea
+    id: expected_model
+    attributes:
+      label: Describe the expected behaviour
+      render: shell
+    validations:
+      required: false
+  - type: textarea
+    id: what-happened_model
+    attributes:
+      label: Standalone code/steps you may have used to try to get what you need
+      description: If there is a problem, provide a reproducible test case that is the bare minimum necessary to generate the problem. If possible, please share a link to Colab, GitHub repo link or anything that we can use to reproduce the problem
+      render: shell
+    validations:
+       required: false
+  - type: textarea
+    id: other_info
+    attributes:
+      label: Other info / Complete Logs 
+      description: Include any logs or source code that would be helpful to diagnose the problem. If including tracebacks, please include the full traceback. Large logs and files should be attached
+      render: shell
+    validations:
+      required: false