Enable blocks instead of single IP-addresses in UI

Rerolled patch for 10.1.x.

Fixed CCF for #51.

Fixed the phpunit test errors in #51, thanks!

function ban_update_8700() {
This needs to be updated for D10.

Thanks for the review @smustgrave!🙌🏼

Updated the patch as requested.
Thanks!

Thanks for the quick turnaround

On Drupal 10.1. with a standard install
Tested the update hook does pass.
Uploading a screenshot of what the UI now looks like (added IS template while I was at it)
Running the tests without the fix I get

Drupal\Core\Database\DatabaseExceptionWrapper : SQLSTATE[HY000]: General error: 1 no such column: bip.ip_range_end: SELECT "bip"."iid" AS "iid"
FROM
"test70272775"."ban_ip" "bip"
WHERE ("bip"."ip" = :db_condition_placeholder_0) AND ("bip"."ip_range_end" = :db_condition_placeholder_1); Array
(
    [:db_condition_placeholder_0] => 16909316
    [:db_condition_placeholder_1] => 16909319
)

Changes look good

As well as the below comments I also wonder that if instead of arbitrary start and end IPs, we should support CIDR ranges, e.g. 192.168.0.0/16 to ban all of 192.168.0.0 to 192.168.255.255. That would be easier to store and parse.

1. +++ b/core/modules/ban/src/BanIpManager.php
   @@ -29,41 +29,138 @@ public function __construct(Connection $connection) {
   +      $group_ip = $query->andConditionGroup()
   +        ->condition('bip.ip', $ip_long, '<=')
   +        ->condition('bip.ip_range_end', $ip_long, '>=');
   

   Wondering if this works as intended in all cases, given that the ip and ip_range_end columns are defined as strings, but here we seem to be doing a numeric comparison.

2. +++ b/core/modules/ban/src/BanIpManagerInterface.php
   @@ -12,11 +12,13 @@ interface BanIpManagerInterface {
   +   * @param array $options
   +   *   Options array.
   

   What are the possible options? We need to document this.

3. +++ b/core/modules/ban/src/BanIpManagerInterface.php
   @@ -31,16 +33,20 @@ public function findAll();
   +   *   The end of the IP address to ban (optional).
   

   ban -> unban

   Also, what happens with overlapping ranges?

4. +++ b/core/modules/ban/src/Form/BanAdmin.php
   @@ -108,14 +116,55 @@ public function buildForm(array $form, FormStateInterface $form_state, $default_
   +          if (!$ip_long) {
   +            $form_state->setErrorByName('ip', $this->t('Only IPv4 is available for IP range.'));
   +          }
   +          if (!$ip_range_end_long) {
   +            $form_state->setErrorByName('ip_range_end', $this->t('Only IPv4 is available for IP range.'));
   +          }
   

   None of the UI changes in this patch (such as these lines above) have test coverage.