Simplify config and auth

[brucetony]

Test out if the params in the nuxt config can be replaced with empty strings and the globalMiddlewareEnabled is sufficient

[brucetony]

The globalMiddlewareEnabled option is simple, but it is nice to reach the landing page first and then opt to sign in so it will not be used

[brucetony]

The config can be used as such:

runtimeConfig: {
  oidc: {
    defaultProvider: "keycloak",
    providers: {
      keycloak: {
        audience: "account",
        userNameClaim: "preferred_username",
        clientId: "",
        clientSecret: "",
        redirectUri: "",
        authorizationUrl: "",
        tokenUrl: "",
        userinfoUrl: "",
        openIdConfiguration: "",
        logoutUrl: "",
        logoutRedirectUri: "",
        exposeAccessToken: false,
        pkce: false,
      },
    },
}