feat: support replacements

[suzuki-shunsuke]

e.g.

inline_registry:
  packages:
  - name: accurics/terrascan
    type: github_release
    repo_owner: accurics
    repo_name: terrascan
    asset: 'terrascan_{{trimPrefix "v" .Package.Version}}_{{title .OS}}_{{.Replacements.Arch}}.tar.gz'
    files:
    - name: terrascan
    replacements:
      amd64: x86_64
  - name: fujiwara/lambroll
    type: github_release
    repo_owner: fujiwara
    repo_name: lambroll
    archive_type: tar.gz
    archive_type_overrides:
    - goos: darwin
      archive_type: zip
    asset: 'lambroll_{{.Package.Version}}_{{.OS}}_{{.Arch}}.{{.PackageInfo.GetArchiveType}}'
    files:
    - name: lambroll
      src: lambroll_{{.Package.Version}}_{{.OS}}_{{.Arch}}/lambroll

packages:
- name: accurics/terrascan
  registry: inline
  version: v1.9.0

- name: fujiwara/lambroll
  registry: inline
  version: v0.11.8