Add support library for returning Dropshot range requests (#6963)

This library is used as a part of
#1599 , I'm pulling it
out of #6782 to help make
the diff smaller.

This PR adds a `range-requests` crate for dropshot-based range requests.

Heavily inspired by @jclulow 's work in
https://github.com/oxidecomputer/buildomat/blob/main/download/src/lib.rs

Cargo.toml

@@ -101,6 +101,7 @@ members = [
     "oximeter/types",
     "package",
     "passwords",
+    "range-requests",
     "rpaths",
     "sled-agent",
     "sled-agent/api",
@@ -232,6 +233,7 @@ default-members = [
     "oximeter/types",
     "package",
     "passwords",
+    "range-requests",
     "rpaths",
     "sled-agent",
     "sled-agent/api",
@@ -404,7 +406,9 @@ hickory-server = "0.24.1"
 highway = "1.2.0"
 hkdf = "0.12.4"
 http = "1.1.0"
+http-body = "1.0.1"
 http-body-util = "0.1.2"
+http-range = "0.1.5"
 httpmock = "0.8.0-alpha.1"
 httptest = "0.16.1"
 hubtools = { git = "https://github.com/oxidecomputer/hubtools.git", branch = "main" }
@@ -546,6 +550,7 @@ rand = "0.8.5"
 rand_core = "0.6.4"
 rand_distr = "0.4.3"
 rand_seeder = "0.3.0"
+range-requests = { path = "range-requests" }
 ratatui = "0.28.1"
 rayon = "1.10"
 rcgen = "0.12.1"

range-requests/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "range-requests"
+description = "Helpers for making and receiving range requests"
+version = "0.1.0"
+edition = "2021"
+license = "MPL-2.0"
+
+[lints]
+workspace = true
+
+[dependencies]
+bytes.workspace = true
+dropshot.workspace = true
+futures.workspace = true
+http.workspace = true
+http-range.workspace = true
+http-body-util.workspace = true
+hyper.workspace = true
+thiserror.workspace = true
+omicron-workspace-hack.workspace = true
+
+[dev-dependencies]
+http-body.workspace = true
+proptest.workspace = true
+tokio.workspace = true
+tokio-util.workspace = true