Copy internal packages from Terraform v1.0

[wata727]

Fixes #937

This PR is the first step in removing dependencies on Terraform's internal packages from TFLint.

First, copy packages required by TFLint to github.com/terraform-linters/tflint/terraform from Terraform v1.0. This includes some redundant code, but I'll ignore it here as it focuses on removing dependencies without changing the TFLint's interface.

This copy adds the following packages:

• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/addrs
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/configs
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/configs/configschema
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/configs/hcl2shim
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/dag
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/depsfile
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/didyoumean
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/experiments
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/getproviders
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/instances
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/lang
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/lang/blocktoattr
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/lang/funcs
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/logging
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/plans
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/plans/objchange
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/providers
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/provisioners
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/states
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/terraform
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/tfdiags
• https://github.com/hashicorp/terraform/tree/v1.0.0/internal/typeexpr
• https://github.com/hashicorp/terraform/tree/v1.0.0/version

Not all the code in the package has been copied, it contains only the minimum files needed to build.

These packages are huge and it's hard to keep everything as maintained as the Terraform core team. I then remove as much apparently redundant code as possible (for example, GraphBuilder isn't needed to simulate Terraform Language semantics) and slim down the copied packages.

In addition, we should be able to minimize the required packages by changing some interfaces. See #937 (comment) for details.

The copied code does not include tests, but I plan to add it as needed as we make changes in the future.