[TABJS-11] Improve --help comments for create table command

[dtbuchholz]

When creating a table, the help flag should explain the differences between the schema and prefix vs passing. Raw SQL CREATE statement.

❯ table create -h
tableland create [schema] [prefix]

Create a new table

Positionals:
  schema  SQL table schema, or full create statement (skip to read from stdin)
                                                                        [string]

Options:
  -h, --help                 Show help                                 [boolean]
  -V, --version              Show version number                       [boolean]
      --config               Path to JSON config file
      --baseUrl              The URL of your Tableland validator        [string]
  -c, --chain                The EVM chain to target                    [string]
      --enableEnsExperiment  Enable ENS experiment                     [boolean]
      --ensProviderUrl       Enable ENS experiment                      [string]
  -k, --privateKey           Private key string                         [string]
  -p, --providerUrl          JSON RPC API provider URL (e.g., https://eth-sepoli
                             a.g.alchemy.com/v2/123abc123a...)          [string]
  -a, --aliases              Path to table aliases JSON file (e.g., ./tableland.
                             aliases.json)                              [string]
      --prefix               Table name prefix (ignored if full create statement
                              is provided)                              [string]
      --ns                   ENS namespace to resolve schema from (experimental)
                                                                        [string]
  -f, --file                 Get statement from input file

See original issue here.

_{From SyncLinear.com | TABJS-11}