CORPORATION: Add new API to check if player can create corporation (#1598)

* CORPORATION: Add new API to check if player can create corporation
* Update description of createCorporation API
* Return enum instead of true/false
* Use throwIfReachable
* Fix typo in comment

markdown/bitburner.corporation.cancreatecorporation.md

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+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [bitburner](./bitburner.md) &gt; [Corporation](./bitburner.corporation.md) &gt; [canCreateCorporation](./bitburner.corporation.cancreatecorporation.md)
+
+## Corporation.canCreateCorporation() method
+
+Return whether the player can create a corporation. Does not require API access.
+
+**Signature:**
+
+```typescript
+canCreateCorporation(selfFund: boolean): CreatingCorporationCheckResult;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  selfFund | boolean | true if you want to self-fund, false otherwise |
+
+**Returns:**
+
+[CreatingCorporationCheckResult](./bitburner.creatingcorporationcheckresult.md)
+
+Result of the check
+
+## Remarks
+
+RAM cost: 0 GB
+