Adds PATCH tag-bindings

[brandonc]

Description

Adds support for the PATCH tag-bindings resources (/workspaces/:id/tag-bindings and /projects/:id/tag-bindings)

Output from tests

Including output from tests may require access to a TFE instance. Ignore this section if you have no environment to test against.

$ ENABLE_BETA=1 go test ./... -v -run "Test(Projects|Workspaces)AddTagBindings"
?       github.com/hashicorp/go-tfe/examples/backing_data       [no test files]
?       github.com/hashicorp/go-tfe/examples/configuration_versions     [no test files]
?       github.com/hashicorp/go-tfe/examples/organizations      [no test files]
?       github.com/hashicorp/go-tfe/examples/registry_modules   [no test files]
?       github.com/hashicorp/go-tfe/examples/run_errors [no test files]
?       github.com/hashicorp/go-tfe/examples/state_versions     [no test files]
?       github.com/hashicorp/go-tfe/examples/users      [no test files]
?       github.com/hashicorp/go-tfe/examples/workspaces [no test files]
?       github.com/hashicorp/go-tfe/mocks       [no test files]
=== RUN   TestProjectsAddTagBindings
=== RUN   TestProjectsAddTagBindings/when_adding_tag_bindings_to_a_project
=== RUN   TestProjectsAddTagBindings/when_adding_26_tags
--- PASS: TestProjectsAddTagBindings (1.87s)
    --- PASS: TestProjectsAddTagBindings/when_adding_tag_bindings_to_a_project (0.23s)
    --- PASS: TestProjectsAddTagBindings/when_adding_26_tags (0.21s)
=== RUN   TestWorkspacesAddTagBindings
=== RUN   TestWorkspacesAddTagBindings/when_adding_tag_bindings_to_a_workspace
=== RUN   TestWorkspacesAddTagBindings/when_adding_26_tags
--- PASS: TestWorkspacesAddTagBindings (2.02s)
    --- PASS: TestWorkspacesAddTagBindings/when_adding_tag_bindings_to_a_workspace (0.26s)
    --- PASS: TestWorkspacesAddTagBindings/when_adding_26_tags (0.23s)
PASS
ok      github.com/hashicorp/go-tfe     4.148s
...

[sebasslash]

Are we missing a changelog entry?

[sebasslash]

💅

Suggested change

	assert.Len(t, bindings, 2)
	require.Len(t, bindings, 2)

to prevent a panic downstream

[github-actions]

Reminder to the contributor that merged this PR: if your changes have added important functionality or fixed a relevant bug, open a follow-up PR to update CHANGELOG.md with a note on your changes.