feat: add diff and get command for the registry

[severin-amrein]

Backwards compatibility:

# still supported for backwards compatibility -> it calls 'dre registry get' under the hood
dre registry

# not supported anymore
dre registry --height <>
dre registry --dump-versions <>

Introduction of three new subcommands:

Get: Show aggregated registry data

# output
{
  "subnets": [
    {
      "subnet_id": "2fq7c-slacv-26cgz-vzbx2-2jrcs-5edph-i5s2j-tck77-c3rlz-iobzx-mqe",
      "membership": [
        "2grd6-wl4h5-ckvc2-agagg-kn5it-axvmv-4nogx-frgyx-5ulsj-kuoyo-lae",
...

History: Show registry data of specified versions

# output
[
  {
    "version": 55469,
    "key": "crypto_record_mcmqr-z4yrw-7wnwf-au7wv-5f7az-fco3a-vuxx3-7lol5-sigpc-jtnqq-aqe_5",
    "value": {
      "bytes_base64": "EBAaIQNAc14Qik6iw7yw87bOz7r5mtsEZFAFQzCW/MNYHEsclioHCOSwzsmyMw=="
    }
  },
  {
    "version": 55470,
    "key": "crypto_record_j4et3-lkqhr-32t4q-3o57n-nm7u3-hvgsd-7v574-3z7mj-eyks5-twtxo-zae_5",
    "value": {
      "bytes_base64": "EBAaIQLSq5kQGSfxFp9P8/HeJIZ0C+iWCrCwhj16vOyCgMgV6ioHCK2MvcuyMw=="
    }
  },
  {
...

Diff: Show diff of the data between two aggregated versions

# output
---
       "node_provider_principal_id": "wwdbq-xuqhf-eydzu-oyl7p-ga565-zm7s7-yrive-ozgsy-zzgh3-qwb3j-cae",
        "dc_id": "at2",
        "rewardable_nodes": {
 -        "type1.1": 14
 +        "type1.1": 28
        },
        "max_rewardable_nodes": {
          "type1.1": 14
 ---
       "node_operator_principal_id": "yedtm-rm5av-s256v-zzi4w-7lxen-koqg6-pzak3-rjzko-xfu2c-dw7eo-bae",
        "node_provider_principal_id": "hycj4-e3jwh-l2bqz-ohuxh-tu4af-agzov-uugg6-j57rk-b6opc-fx3ml-kqe",
        "dc_id": "ag1",
 -      "rewardable_nodes": {},
 +      "rewardable_nodes": {
 +        "type3.1": 1
 +      },
        "max_rewardable_nodes": {
          "type3.1": 1
        },
...

Manual Testing:

• dre registry diff
• dre registry diff -1
• dre registry diff -5
• dre registry diff -5 -2
• dre registry diff
• dre registry diff -o /tmp/sev_diff.txt
• dre registry diff -f "principal == acqus-l4yyc-h44lw-grfxw-h7jqf-mtvt3-huwmj-4s372-sc5db-5nsfr-2ae"
• dre registry get
• dre registry get -5
• dre registry get 55400
• dre registry get -o /tmp/sev_get.txt
• dre registry get -f "principal == 64xe5-tx2s3-4gjmj-pnozr-fejw2-77y5y-rhcjk-glnmx-62brf-qin5q-pqe"
• dre registry history
• dre registry history -5
• dre registry history 55400
• dre registry history -o /tmp/sev_history.txt
• dre registry history -f "key == crypto_record_rtjw5-ja7cv-j7nyl-jc5mc-t7lol-wjouh-nh6tm-baoba-wzra6-toyp5-iqe_5"
• same output for arguments that refer to the same version

cargo run registry get -o /tmp/sev_no.txt
cargo run registry get -1 -o /tmp/sev_minusone.txt
cargo run registry get 55488 -o /tmp/sev_55488.txt

[NikolaMilosa]

General comment: dre registry is used in a lot of our tooling (that isn't all in this repo sadly) and changing its interface will demand a lot of additional work that we may not even see now. I suggest one of the following:

• Leave current dre registry as is, extract the things that you need in a module and make your own new command for the diff
• Somehow keep the old behavior as is dre registry > dumps the registry

Personally I think that the first one is easier

I'll let @pietrodimarco-dfinity finish the review as he has more insights into what is needed. These are just styling comments.