1.0.6: Add crypto/rsa-import, integrations/github-app

[danopia]

Can be used together something like this:

import { importPrivateKey } from "@cloudydeno/bitesized/crypto/rsa-import";
import { GithubAppIdentity } from "@cloudydeno/bitesized/integrations/github-app";

const clientId = Deno.env.get('Github_ClientId');
const privateKey = Deno.env.get('Github_PrivateKey');
const installationId = Deno.env.get('Github_InstallationId');

if (!clientId) throw `Missing Github_ClientId envvar`;
if (!privateKey) throw `Missing Github_PrivateKey envvar`;
if (!installationId) throw `Missing Github_InstallationId envvar`;

const githubApp = new GithubAppIdentity(clientId, await importPrivateKey(privateKey));
const githubToken = await githubApp.fetchInstallationCredential(installationId);
// Can now use `githubToken.token` in Github API requests