feat: update CI release workflow

[han0110]

• Remove publishing empty and panic ELFs (guests kept to do testing for now, but I think we'd remove them eventually)

• Add build script to populate EL_VERSION for stateless-validator-ethrex and stateless-validator-reth

• Generate release note by python script in a table format (resolves Displaying target information #22), a sample:

  release-body.md

  Compiled guest programs

  Built with Ere compiler version: v0.12.0.

  EL	EL Version	zkVM	zkVM Version	Target	ELF	Program VK
  ethrex	b112f94	risc0	v3.0.5	riscv32im	Link	Link
  ethrex	b112f94	sp1	v6.1.0	riscv32im	Link	Link
  ethrex	b112f94	zisk	v0.18.0	riscv64im	Link	Link
  reth	v2.1.0	airbender	73d69b5	riscv32im	Link	Link
  reth	v2.1.0	openvm	v1.4.3	riscv32im	Link	Link
  reth	v2.1.0	risc0	v3.0.5	riscv32im	Link	Link
  reth	v2.1.0	sp1	v6.1.0	riscv32im	Link	Link
  reth	v2.1.0	zisk	v0.18.0	riscv64im	Link	Link

• Add a artifact-registry.json so we can maintiain the ELF republish metadata in it in the future, and CI and the release body generation script will use it to do republishment, a sample:

  artifact-registry.json

  {
      "stateless-validator-elf": {
          "{el}-{zkvm}": {
              "url": "https://stateless-validator-{el}-{zkvm}.elf",
              "el_version": "vX.Y.Z",
              "zkvm_version": "vX.Y.Z"
          }
      },
      "stateless-validator-static-library": {
          "{el}": {
              "url": "https://stateless-validator-{el}.a",
              "version": "vX.Y.Z"
          }
      },
      "zkvm-static-library": {
          "{zkvm}": {
              "url": "https://{zkvm}.a",
              "version": "vX.Y.Z"
          }
      }
  }

[jsign]

LGTM.

Agree, at some point might be good to remove the empty and panic guest programs. Maybe the panic one might be useful, but it feels to me that the case should be more like a separate interesting use-case for zkVM standards repo (or adjacent repo) than ere-guests, maybe.

Mainly, if removing them could simplify the ere-guests architecture further.

[han0110]

Agree, at some point might be good to remove the empty and panic guest programs. Maybe the panic one might be useful, but it feels to me that the case should be more like a separate interesting use-case for zkVM standards repo (or adjacent repo) than ere-guests, maybe.

Make sense, actually the panic guests are tested in ere already, I think I will create another PR to remove them soon so the repo can be more lightweight (less workflow and less Cargo.lock update noise).