Add database layer for assigning an IP Pool to a service - #11109

control: job assigned to worker 01M0JH528113DJ143A4H33CETA [factory aws, i-0c4189c4eae34d999] (queued for 45 s)
...
task: starting task 0: "setup"
task: process exited: duration 4148 ms, exit code 0
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task: starting task 1: "rust-toolchain"
task: process exited: duration 17038 ms, exit code 0
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task: starting task 2: "authentication"
task: process exited: duration 16 ms, exit code 0
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task: starting task 3: "clone repository"
task: process exited: duration 19311 ms, exit code 0
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task: starting task 4: "build"
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| info: running `cargo check --bins` on zone-setup (337/337)
| warning: profile package spec `blake2b_simd` in profile `dev` did not match any packages
| warning: profile package spec `rust-argon2` in profile `dev` did not match any packages
|     Checking uzers v0.12.2
|     Checking zone-setup v0.1.0 (/work/oxidecomputer/omicron/zone-setup)
|     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.70s
| 
| real    14:03.358868793
| user    21:25.047135708
| sys      4:17.974894100
| trap        0.338638258
| tflt        0.564153056
| dflt        0.851071807
| kflt        0.005767500
| lock  1:27:24.408639016
| slp   1:41:03.470500117
| lat        56.044348044
| stop     4:04.851515133
task: process exited: duration 972889 ms, exit code 0
|W| found 0 output files