Add linter rule for RPC-Get-V1-02 (Azure#425)

* Adding RPC guideline code

* organizing ARM RPC rules

* Enable linter rule for RPC-Get-V1-02

* addressing comments

* Update packages/rulesets/src/spectral/az-arm.ts

accepting the suggestion for the given paths

Co-authored-by: Jianye Xi <[email protected]>

* rush build generated files

Co-authored-by: Jianye Xi <[email protected]>

Author: rkmanda

docs/get-must-not-have-request-body.md

@@ -0,0 +1,29 @@
+# GetMustNotHaveRequestBody
+
+## Category
+
+ARM Error
+
+## Applies to
+
+ARM OpenAPI(swagger) specs
+
+## Related ARM Guideline Code
+
+- RPC-Get-V1-02
+
+## Output Message
+
+'Get' operation '{0}' must not have a request body.
+
+## Description
+
+The request body of a get operation must be empty.
+
+## Why the rule is important
+
+This will ensure that the get operation aligns with the [ARM guidelines](https://github.com/Azure/azure-resource-manager-rpc/blob/master/v1.0/resource-api-reference.md).
+
+## How to fix the violation
+
+Ensure that the request body of the get operation is empty. This may involve a service side change and may cause a breaking change in the generated SDK.

docs/rules.md

@@ -328,6 +328,12 @@ Verifies whether value for `operationId` is named as per ARM guidelines.
 
 Please refer to [get-in-operation-name.md](./get-in-operation-name.md) for details.
 
+### GetMustNotHaveRequestBody
+
+The request body of a get operation must be empty.
+
+Please refer to [get-must-not-have-request-body.md](./get-must-not-have-request-body.md) for details.
+
 ### GetOperation200
 
 The get operation should only return 200, also it should not be a long running operation.