Rename getScriptExecution() to scriptExecution() and document API limits (#90)

The get* prefix is reserved for accessors on Resource (getId, getPloi,
getServer, getEndpoint), which Server inherits. Endpoint-calling methods
are noun-only: logs(), monitoring(), phpVersions(). The method was added
in #89 after the 2.1 tag, so it is unreleased and can be renamed without
a deprecated alias.

Also asserts the new endpoints build correctly in testBuildsUrlCorrectly()
(the only test that does not hit the live API) and documents that $content
is capped at 7500 characters and $user defaults to "ploi".

Author: Cannonb4ll

README.md

@@ -129,12 +129,12 @@ $ploi->servers(123)->opcache()->disable();
 // Refresh opcache
 $ploi->servers(123)->opcache()->refresh();
 
-// Run a one-off script on a server
+// Run a one-off script on a server, $content is max 7500 characters and $user defaults to "ploi"
 $response = $ploi->servers(123)->runOneOffScript('npm install -g pm2', $user = 'deployer');
 $executionId = $response->getData()->id;
 
 // Poll one-off script execution status and output
-$ploi->servers(123)->getScriptExecution($executionId);
+$ploi->servers(123)->scriptExecution($executionId);
 ```
 
 ### Sites
@@ -644,7 +644,7 @@ $ploi->scripts(123)->run($id = null, $serverIds = []);
 $ploi->servers(123)->runOneOffScript($content, $user = null);
 
 // Get one-off script execution status
-$ploi->servers(123)->getScriptExecution($executionId);
+$ploi->servers(123)->scriptExecution($executionId);
 ```
 
 ### Daemons

src/Ploi/Resources/Server.php

@@ -231,7 +231,7 @@ public function runOneOffScript(string $content, ?string $user = null): Response
         ]);
     }
 
-    public function getScriptExecution(string $executionId): Response
+    public function scriptExecution(string $executionId): Response
     {
         $this->setIdOrFail();
 

tests/Ploi/Resources/ServerTest.php

@@ -31,6 +31,10 @@ public function testBuildsUrlCorrectly()
         $this->assertEquals('servers/1/endpoint', $server->buildEndpoint('endpoint'));
         $this->assertEquals('servers/1/endpoint', $server->buildEndpoint('/endpoint'));
 
+        $execution = '3f4c9e9a-8b4e-4f0e-9d3b-2f6f2c1a7d42';
+        $this->assertEquals('servers/1/scripts/run', $server->buildEndpoint('scripts/run'));
+        $this->assertEquals("servers/1/scripts/run/{$execution}", $server->buildEndpoint("scripts/run/{$execution}"));
+
         $server->setId();
         $this->assertEquals('servers/different-endpoint', $server->buildEndpoint('/different-endpoint'));
     }