* remove dependency of deprecated on v2
* use new artifact identification logic
* add custom artifact type compiler test
* compile schema_version from non-kfp artifacts
* update tests
* add importer to compiler test
* update golden snapshots
* fix type checking code
* undo executor_test diff
* remove gcpc types compiler test
* add compilation test comment
* update google artifact handling
* update compiler test
* only permit system. and google. artifact types; add tests
* update compiler test
* simplify type checking logic
* use bundled artifact types in PipelineArtifactChannel
* raise error on unknown v1 input or output
* add type utils and move functions
* add type utils tests
* remove schema_version from inputspec and outputspec
* update artifact proto creation and tests
* propogate bundled artifact type string changes throughout sdk
* update golden snapshot
* remove unused v1 compat and tests
* update type checking and tests to validate schema_version using semantic versioning
* update importer sample
* update test data config
* update test_data config
* clean up sample
* clean up sample
* remove unused imports
* use google as isort profile
* sort imports
* format with yapf
* clean end of file new line, trailing whitespace, double quoted strings
* move placeholders to placeholders module; implement if-present and concat placeholders
* update module name and method names throughout codebase
* rename placeholder abc
* add back compat support for CEL-style concat string
* add copyright
* add docstrings; clean up
* remove duplicate code
* clean up relevant files
* use context manager for temporary directory cleanup
* add component compilation methods
* add component compilation tests
* add more complete pipeline_func argument handling
* use context manager for handling type check mode
* improve checks on inputs for component compilation
* correct pipeline name for primitive component IR
* simplify component compilation logic
* extract compiler methods
* move compiler helpers to helpers file to avoid circular imports
* remove underscore prefix from functions in hidden module
* move helpers tests to helper_test module
* put to_pipeline_spec on ComponentSpec
* fix inputs reference
* use same naming regex for pipelines and components
* permit compilation of all BaseComponent subclasses
* clean up docstrings
* merge compiler.helpers into pipeline_spec_builder
* modify docstrings; refactor
* modify docstring
Connor McCarthy
JOCSTAA
Chen Sun
Yaqi Ji