Avoid URL encoding.

I'm observing an issue with `wreq-0.5.4.0`, where I'd like to avoid URL encoding parameters for some servers that don't handle it very well. Say I'd like to set a parameter `foo=bar,baz`, and I'd like to send these parameters to the request without URL encoding.

There seems to be no way to do this with `wreq`. Using `param` seems to url encode the set parameters before they are sent.
Here's a repro:

``` haskell
-- set params.
λ> let opts = Wreq.defaults & Wreq.param "foo" .~ [ "bar,baz" ]
-- lets see what we have:
λ> opts
Options { manager = Left _, proxy = Nothing, auth = Nothing, headers = [("User-Agent","haskell wreq-0.5.4.0")], params = [("foo","bar,baz")], redirects = 10, cookies = Just (CJ {expose = []}) } -- no URL encoding yet , or at least not when `show` is called.

-- lets trigger an error so that the request gets logged.
λ> Wreq.getWith opts "https://apibeta.centralapp.com/api/v2/no/such/path" -- will respond with a 404.
*** Exception: HttpExceptionRequest Request {
host = "apibeta.centralapp.com"
port = 443
secure = True
requestHeaders = [("User-Agent","haskell wreq-0.5.4.0")]
path = "/api/v2/no/such/path"
queryString = "?foo=bar%2Cbaz" -- params have been URL encoded.
method = "GET"
proxy = Nothing
rawBody = False
redirectCount = 10
responseTimeout = ResponseTimeoutDefault
requestVersion = HTTP/1.1
proxySecureMode = ProxySecureWithConnect
}
```

Now I've retried this with plain `http-client` with versions;
```
http-client-0.7.13.1
http-client-tls-0.3.6.1
```
And the behaviour is different:

``` haskell
-- create a request.
λ> req <- HTTP.parseRequest "https://apibeta.centralapp.com/api/v2/no/such/path"
-- set query params.
λ> HTTP.httpLbs mgr (req { HTTP.queryString = "?foo=bar,baz" })
-- make the request, also getting a 404:
λ> HTTP.httpLbs (req { HTTP.queryString = "?foo=bar,baz" }) mgr
Response {responseStatus = Status {statusCode = 404, statusMessage = "Not Found"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Thu, 31 Aug 2023 08:24:39 GMT"),("Content-Type","application/json;charset=utf-8"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Set-Cookie","AWSALB=YR0tnOLtRO4hnEkt/k8O1g6hB1H567vUtd6GShkUk42UMX0ERWsScVfBPWqWQLugubSrEpMIhbwmgeo135PIOv9v6pipXF98ot34Ia0iL/sKiFyVmNTfkybUk7TM; Expires=Thu, 07 Sep 2023 08:24:39 GMT; Path=/"),("Set-Cookie","AWSALBCORS=YR0tnOLtRO4hnEkt/k8O1g6hB1H567vUtd6GShkUk42UMX0ERWsScVfBPWqWQLugubSrEpMIhbwmgeo135PIOv9v6pipXF98ot34Ia0iL/sKiFyVmNTfkybUk7TM; Expires=Thu, 07 Sep 2023 08:24:39 GMT; Path=/; SameSite=None; Secure"),("Server","Quasar/CentralApp/Quasar/1.1.3"),("Quasar-Serv","apibeta.centralapp.com"),("Via","CentralApp/Quasar/1.1.3"),("x-powered-by","Haskell, baby."),("Access-Control-Allow-Origin","*"),("Access-Control-Allow-Credentials","true"),("Access-Control-Allow-Methods","DELETE, GET, OPTIONS, PATCH, POST, PUT"),("Access-Control-Allow-Headers","Accept, Authorization, Cache-Control, Content-Type, DNT, If-Modified-Since, Keep-Alive, Origin, User-Agent, X-Bus-URN, X-Domain, X-Mx-ReqToken, X-Requested-With")], responseBody = "{\"errors\":[{\"code\":\"ERR.INVALID_ENDPOINT\",\"message\":\"No such request is configured on this server.\",\"service\":\"Lib/GenericComp\",\"status\":404,\"type\":\"global\"}],\"services\":[\"Lib/GenericComp\"]}", responseCookieJar = CJ {expose = [Cookie {cookie_name = "AWSALBCORS", cookie_value = m"YR0tnOLtRO4hnEkt/k8O1g6hB1H567vUtd6GShkUk42UMX0ERWsScVfBPWqWQLugubSrEpMIhbwmgeo135PIOv9v6pipXF98ot34Ia0iL/sKiFyVmNTfkybUk7TM", cookie_expiry_time = 3023-01-01 00:00:00 UTC, cookie_domain = "apibeta.centralapp.com", cookie_path = "/", cookie_creation_time = 2023-08-31 08:24:39.054651166 UTC, cookie_last_access_time = 2023-08-31 08:24:39.054651166 UTC, cookie_persistent = False, cookie_host_only = True, cookie_secure_only = True, cookie_http_only = False},Cookie {cookie_name = "AWSALB", cookie_value = "YR0tnOLtRO4hnEkt/k8O1g6hB1H567vUtd6GShkUk42UMX0ERWsScVfBPWqWQLugubSrEpMIhbwmgeo135PIOv9v6pipXF98ot34Ia0iL/sKiFyVmNTfkybUk7TM", cookie_expiry_time = 3023-01-01 00:00:00 UTC, cookie_domain = "apibeta.centralapp.com", cookie_path = "/", cookie_creation_time = 2023-08-31 08:24:39.054651166 UTC, cookie_last_access_time = 2023-08-31 08:24:39.054651166 UTC, cookie_persistent = False, cookie_host_only = True, cookie_secure_only = False, cookie_http_only = False}]}, responseClose' = ResponseClose, responseOriginalRequest = Request {
host = "apibeta.centralapp.com"
port = 443
secure = True
requestHeaders = []
path = "/api/v2/no/such/path"
queryString = "?foo=bar,baz"
method = "GET"
proxy = Nothing
rawBody = False
redirectCount = 10
responseTimeout = ResponseTimeoutDefault
requestVersion = HTTP/1.1
proxySecureMode = ProxySecureWithConnect
}
}
```

As you can see, `http-client` doesn't URL encode the parameters, but `wreq` seems to be doing that. Server logs also confirm this.

Is there a way to avoid this? That is, set parameters with and without URL encoding?

What I've tried so far: swapping out the default manager with one generated via `Network.HTTP.Client.TLS.newTlsManager` assuming the encoding was happening in the manager, but that has had no effect.