fm: refactor (SitrepVersion, Sitrep) into a type - #11053

control: job assigned to worker 01KZRTQTCEXNX5VTKY0CE4PZM7 [factory aws, i-0faa6aff345364640] (queued for 49 s)
...
task: starting task 0: "setup"
task: process exited: duration 4117 ms, exit code 0
...
task: starting task 1: "rust-toolchain"
task: process exited: duration 16298 ms, exit code 0
...
task: starting task 2: "authentication"
task: process exited: duration 16 ms, exit code 0
...
task: starting task 3: "clone repository"
task: process exited: duration 17955 ms, exit code 0
...
task: starting task 4: "build"
...
|  Documenting omicron-uuid-kinds v0.1.0 (/work/oxidecomputer/omicron/uuid-kinds)
|  Documenting dev-tools-common v0.1.0 (/work/oxidecomputer/omicron/dev-tools/common)
|     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7m 27s
| warning: the following packages contain code that will be rejected by a future version of  [...]
| note: to see what the problems were, use the option `--future-incompat-report`, or run `ca [...]
|    Generated /work/oxidecomputer/omicron/target/doc/api_identity/index.html and 203 other  [...]
| 
| real     7:27.789682983
| user    20:17.454803615
| sys      4:21.496140265
| trap        0.298264169
| tflt        0.038220495
| dflt        0.051454914
| kflt        0.000035940
| lock  7:07:00.467184115
| slp   2:30:20.589853329
| lat        35.649312519
| stop     2:07.554295212
task: process exited: duration 835940 ms, exit code 0
|W| found 0 output files