Add option for tabular output

Currently all commands will display their results as pretty-printed
JSON. Tabular output is convenient for easy comparison of a single field
when multiple objects are returned, and more amenable to traditional
shell processing.

Add a new global `--format` flag to control output format, defaulting to
the existing JSON output. As larger output items, such as instances, can
easily overflow a typical terminal width, we allow users to specify
which fields to print with `--format=table:field1,field2,...`.

Non-scalar fields within a returned object will be printed in compact
JSON format, e.g. `{"cpus":0,"memory":0,"storage":0}` for the
`allocated` field on `oxide silo utilization list`.

To determine the field names to be shown in the table header, we parse
the schema for the return type as part of `OxideOverride`. This logic
makes some assumptions about the shape of the data returned, and we need
to ensure that it remains valid. Add a new return_types `xtask` job,
which writes out all return types from the Oxide API to a file, against
which we test the parsing logic.

Author: wfchandler

Cargo.lock

@@ -22,6 +22,7 @@ chrono = { version = "0.4.41", features = ["serde"] }
 clap = { version = "4.5.40", features = ["derive", "string", "env", "wrap_help"] }
 clap_complete = "4.5.54"
 colored = "3.0.0"
+comfy-table = "7.1.4"
 crossterm = { version = "0.29.0", features = [ "event-stream" ] }
 dialoguer = "0.11.0"
 dirs = "6.0.0"
@@ -32,13 +33,15 @@ flume = "0.11.1"
 futures = "0.3.31"
 httpmock = "0.7.0"
 humantime = "2.2.0"
+indexmap = "2.10.0"
 indicatif = "0.17.12"
 libc = "0.2.174"
 log = "0.4.26"
 md5 = "0.7.0"
 newline-converter = "0.3.0"
 oauth2 = "5.0.0"
 open = "5.3.2"
+openapiv3 = "2.2.0"
 oxide = { path = "sdk", version = "0.12.0" }
 oxide-httpmock = { path = "sdk-httpmock", version = "0.12.0" }
 oxnet = "0.1.2"

Cargo.toml

@@ -27,12 +27,14 @@ chrono = { workspace = true }
 clap = { workspace = true }
 clap_complete = { workspace = true }
 colored = { workspace = true }
+comfy-table = { workspace = true }
 crossterm = { workspace = true }
 dialoguer = { workspace = true }
 dirs = { workspace = true }
 env_logger = { workspace = true }
 futures = { workspace = true }
 humantime = { workspace = true }
+indexmap = { workspace = true }
 indicatif = { workspace = true }
 log = { workspace = true }
 md5 = { workspace = true }