feat: add Inko language support

[jhult]

Summary

Add minimal config for Inko language with Hashtag comment style support.

[Copilot]

Pull request overview

This PR adds support for the Inko programming language by adding a new entry to the languages.yaml configuration file. However, the entry is incomplete and missing several required fields that are consistently present across all other language definitions in the file.

Changes:

• Added Inko language entry with file extension ".inko" and Hashtag comment style

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The Inko language entry is missing several fields that are typically present in language definitions. According to the file header comments (lines 6-30), the following fields should be considered:

1. type field - Should be either "data", "programming", "markup", "prose", or nil. Looking at neighboring entries like "Inno Setup" (line 2410) and "Io" (line 2422), programming languages typically have type: programming.

2. language_id field - This is an integer field present in all language entries in the file (as evidenced by the comprehensive search results). It's described as "language-name-independent indexed field" and is required.

3. tm_scope field - This represents the TextMate scope and should be set to "none" if there's no grammar. This field is present in nearly all entries.

4. ace_mode field - This is the Ace Mode for highlighting and should be set to "text" if a mode doesn't exist. This field is present in all entries.

These fields should be added to make the Inko entry consistent with other language definitions in the file.

Suggested change

	Inko:
	extensions:
	- ".inko"
	Inko:
	type: programming
	extensions:
	- ".inko"
	tm_scope: none
	ace_mode: text
	language_id: 100000000