feat: add deno-github-mod.ts, update deno-sshsig-mod.ts

libraries/deno-github-mod.ts

@@ -0,0 +1,38 @@
+import {
+    getFetchAutoProxyInit,
+} from "https://hatter.ink/script/fetch/library/deno-fetch-auto-proxy-mod.ts?202501191421";
+
+export class SshKey {
+    algorithm: string;
+    material: string;
+    description?: string;
+
+    constructor(
+        algorithm: string,
+        material: string,
+        description: string | undefined,
+    ) {
+        this.algorithm = algorithm;
+        this.material = material;
+        this.description = description;
+    }
+
+    static parseSshKey(key: string): SshKey {
+        const keyParts = key.split(/\s+/);
+        if (keyParts.length < 2 || keyParts.length > 3) {
+            throw `Bad SSH key format ${key}`;
+        }
+        return new SshKey(
+            keyParts[0],
+            keyParts[1],
+            (keyParts.length > 2) ? keyParts[2] : undefined,
+        );
+    }
+}
+
+export async function fetchKeys(username: string): Promise<Array<SshKey>> {
+    const url = `https://github.com/${username}.keys`;
+    const response = await fetch(url, getFetchAutoProxyInit());
+    const responseText = await response.text();
+    return responseText.trim().split("\n").map((k) => SshKey.parseSshKey(k));
+}