use go-terraform-address to parse address

[drlau]

This PR updates parsing resource addresses to use hashicorp/go-terraform-address.

This PR will not be merged for now because it does not handle data paths:

• data.mydata.path
• module.mymodule.data.mydata.path
• module.mymodule.data.data.data

--- FAIL: TestNewResourceChangeFromComment (0.00s)
    --- FAIL: TestNewResourceChangeFromComment/handles_modules_with_data_and_data_as_the_name (0.00s)
        resource_test.go:243: Unexpected error 1:26 (25): no match found, expected: "[", [a-zA-Z0-9_-]i or EOF
    --- FAIL: TestNewResourceChangeFromComment/handles_modules_with_data (0.00s)
        resource_test.go:243: Unexpected error 1:28 (27): no match found, expected: "[", [a-zA-Z0-9_-]i or EOF
    --- FAIL: TestNewResourceChangeFromComment/handles_data (0.00s)
        resource_test.go:243: Unexpected error 1:12 (11): no match found, expected: "[", [a-zA-Z0-9_-]i or EOF