feat: add sigoden/aichat (#18778)

[sigoden/aichat](https://github.com/sigoden/aichat): Use GPT-4(V), Gemini, LocalAI, Ollama and other LLMs in the terminal

pkgs/sigoden/aichat/pkg.yaml

@@ -0,0 +1,4 @@
+packages:
+  - name: sigoden/aichat@v0.12.0
+  - name: sigoden/aichat
+    version: v0.8.0

pkgs/sigoden/aichat/registry.yaml

@@ -0,0 +1,34 @@
+packages:
+  - type: github_release
+    repo_owner: sigoden
+    repo_name: aichat
+    description: Use GPT-4(V), Gemini, LocalAI, Ollama and other LLMs in the terminal
+    version_constraint: "false"
+    version_overrides:
+      - version_constraint: semver("<= 0.8.0")
+        asset: aichat-{{.Version}}-{{.Arch}}-{{.OS}}.{{.Format}}
+        format: tar.gz
+        windows_arm_emulation: true
+        overrides:
+          - goos: windows
+            format: zip
+            replacements:
+              arm64: arm64
+        replacements:
+          amd64: x86_64
+          arm64: aarch64
+          darwin: apple-darwin
+          linux: unknown-linux-musl
+          windows: pc-windows-msvc
+      - version_constraint: "true"
+        asset: aichat-{{.Version}}-{{.Arch}}-{{.OS}}.{{.Format}}
+        format: tar.gz
+        overrides:
+          - goos: windows
+            format: zip
+        replacements:
+          amd64: x86_64
+          arm64: aarch64
+          darwin: apple-darwin
+          linux: unknown-linux-musl
+          windows: pc-windows-msvc