Implement Kopia common args and opts

[plar]

Change Overview

This PR is the 2nd in the series of PRs that will add a new way to build Kopia CLI commands.

PR Train:

1. PR-2653 Introducing a new approach to building Kopia CLI commands using safecli v0.0.6
2. PR-2654 Implement Kopia common args and opts
3. PR-2655 Implement Kopia storage helpers
4. PR-2656 Add Kopia Filesystem storage opts
5. PR-2657 Add Kopia GCS storage opts
6. PR-2658 Add Kopia Azure storage opts
7. PR-2659 Add Kopia S3 and S3 compliant storage opts
8. PR-2661 Add Kopia repository create command
9. PR-2662 Add Kopia repository connect command
10. PR-2663 Add Kopia repository connect server command
11. PR-2664 Add Kopia repository set-parameters command
12. PR-2665 Add Kopia repository status command
    This PR introduces common argument structures and flags for Kopia CLI, along with extended error definitions:

• pkg/kopia/cli/args/Common and pkg/kopia/cli/args/CacheA structs encapsulate common command-line arguments and cache-related arguments for the Kopia CLI.
• pkg/kopia/cli/internal/opts package presents common and cache-related options for the Kopia CLI.
• pkg/kopia/cli/internal/args package presents common arguments for the Kopia CLI.

Pull request type

Please check the type of change your PR introduces:

• 🚧 Work in Progress
• 🌈 Refactoring (no functional changes, no api changes)
• 🐹 Trivial/Minor
• 🐛 Bugfix
• 🌻 Feature
• 🗺️ Documentation
• 🤖 Test

Test Plan

• 💪 Manual
• ⚡ Unit test
• 💚 E2E

[hairyhum]

Just some comments about code size. It feels like we can shed some code in some places here.

[ankitjain235]

Added one suggestion, looks good otherwise.

[PrasadG193]

Needs minor formating fixes, rest looks good to me

[PrasadG193]

Not test to run defined? Am I missing something?

[plar]

What do you mean? We have 2 tests here:

func TestArgs(t *testing.T) { check.TestingT(t) }
// Go test/bridge func for `go test` and delegate the actual testing work to the `check` framework.

// register `test.ArgumentSuite` with the `check` framework.
var _ = check.Suite(&test.ArgumentSuite{Cmd: "cmd", Arguments: []test.ArgumentTest{
	{
		Name:        "Invalid ID",
		Argument:    args.ID(""),
		ExpectedErr: cli.ErrInvalidID,
	},
	{
		Name:        "ID",
		Argument:    args.ID("id12345"),
		ExpectedCLI: []string{"cmd", "id12345"},
	},
}})

We're using github.com/kanisterio/safecli/test.ArgumentSuite to run table tests.

[julio-lopez]

@plar If these are not referenced anywhere, can you remove them please?