Refinement of CLI tool argument handling

## Feature Request

### Summary

Ergonomics of some commands took a bit to figure out --

```
❯ celestia blob submit 0x00 0x00 --url https://example.com
Error: cant access the auth token: token/node-store flag was not specified: no opened Node Store found (no node is running)
```

Needs a token, even if RPC node doesn't. And any random string works.

Following requires a blob and namespace... even though it doesn't use them?

```
❮ celestia blob submit --url https://example.com --token null --input-file ./input.json
panic: runtime error: index out of range [0] with length 0

goroutine 1 [running]:
github.com/celestiaorg/celestia-node/nodebuilder/blob/cmd.init.func6(0x10983aea0?, {0x1400179e660?, 0x0?, 0x105457806?})
/home/runner/work/celestia-node/celestia-node/nodebuilder/blob/cmd/blob.go:138 +0x148
github.com/spf13/cobra.(*Command).execute(0x10983aea0, {0x1400179e600, 0x6, 0x6})
/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.9.1/command.go:1000 +0x7ec
github.com/spf13/cobra.(*Command).ExecuteC(0x10983a0e0)
/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.9.1/command.go:1148 +0x384
github.com/spf13/cobra.(*Command).Execute(...)
/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.9.1/command.go:1071
github.com/spf13/cobra.(*Command).ExecuteContext(...)
/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.9.1/command.go:1064
main.run()
/home/runner/work/celestia-node/celestia-node/cmd/celestia/main.go:48 +0x58
main.main()
/home/runner/work/celestia-node/celestia-node/cmd/celestia/main.go:41 +0x1c
```

For large blobs it'd be nice to support stdin or pipe with a defined namespace.

### Problem Definition

Being forced to include irrelevant arguments is odd ergonomics.