Support unwrapping unknown implementations of `proto.Message` (#1207)

* Support unwrapping unknown implementations of `proto.Message`

Signed-off-by: Sri Krishna <[email protected]>

* Add test case

Signed-off-by: Sri Krishna <[email protected]>

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Signed-off-by: Sri Krishna <[email protected]>
Co-authored-by: Sri Krishna <[email protected]>

Cost tracking for list operations (#1192)

Cost tracking for list operations (#1192)

Refactoring changes to create a test runner option from passed flags,…

… correct indentation and add package level comment for test (#1165)

* corrected indentation and added package comment for /test
* fix indentation for required_labels test file
* added test runner options from flags as a public method

Separate unnest optimization from composer to capture type info (#1138)

* Separate unnest optimization from composer to capture type info
* Simplify the variable tracking during unnest

Support for splitting nested branching operators within policies (#1136)

* Support for splitting nested branching operators within policies
* Introduce an ast.Heights() helper
* Updated tests and expanded flattening to all calls
* Added test case for comprehension pruning during unnest

Support for feature flags and validators in env.Config (#1132)

* Support for feature flags and validators in env.Config
* Minor update to documentation

Add k8s custom policy tag handler for test (#1121)

* Add k8s custom policy tag handler for test
* Add copyright and remove redundant attribute from go_library target

Minor update on cost order (#1119)

* slight reordering in cost computation to preserve legacy compatibility
* Additional tests to attempt to catch ordering issues with cost estimation

Modify cost updates to be more extension friendly (#1113)

* Revert scalar designation for type and null values
* Revert type size estimation to defer to caller first