feat: loopinstall local plugins

[erikburt]

Changes

• Refactor logic for readability
• Support local installs

Testing

I'm not sure how to fully test this.

I've tested that it at least installs with non-zero exit code when pointed at a local repo. For example:

  cosmos:
    - moduleURI: "/Users/erik/Documents/repos/chainlink-cosmos"
      gitRef: "f740e9ae54e79762991bdaf8ad6b50363261c056"
      installPath: "./pkg/cosmos/cmd/chainlink-cosmos"
      libs:
        - "/go/pkg/mod/github.com/!cosm!wasm/wasmvm@v*/internal/api/libwasmvm.*.so"

---

DX-2113

[github-actions[bot]]

✅ API Diff Results - No breaking changes

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[chainchad]

@erikburt we should be able to test this by pointing /chainlink to use your branch/ref here for chainlink-common (in the root go.mod IIRC) and then trying to build a Docker image with the private plugins. Let me know if I can help 👍