Add API to provide descriptions as Minetest hypertext markup

app/tests/unit/test_minetest_hypertext.py

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+from app.utils.minetest_hypertext import html_to_minetest
+
+
+conquer_html = """
+<p>
+Welcome to <b>Conquer</b>, a mod that adds RTS gameplay. It allows players to start
+Conquer sub-games, where they can place buildings, train units, and
+fight other players.
+</p>
+
+<h2>Starting or joining a session</h2>
+
+<p>
+You can list running sessions by typing:
+</p>
+
+<pre><code>/conquer list
+new line
+
+another new line</code></pre>
+
+<p>
+You'll switch into Conquer playing mode, where you will be given buildings that you can place.
+You'll need to place a keep, which you must protect at all costs.
+</p>
+
+<p>
+You may leave a game and return to normal playing mode at anytime by typing:
+</p>
+
+<h2>Conquer GUI</h2>
+
+<p>
+The Conquer GUI is the central place for monitoring your kingdom.
+Once in a session, you can view it by pressing the inventory key (I),
+or by punching/right-clicking the keep node.
+</p>
+"""
+
+
+conquer_expected = """
+Welcome to <b>Conquer</b>, a mod that adds RTS gameplay. It allows players to start Conquer sub-games, where they can place buildings, train units, and fight other players.
+
+<big>Starting or joining a session</big>
+You can list running sessions by typing:
+<code>/conquer list
+new line
+
+another new line</code>
+You'll switch into Conquer playing mode, where you will be given buildings that you can place. You'll need to place a keep, which you must protect at all costs.
+You may leave a game and return to normal playing mode at anytime by typing:
+
+<big>Conquer GUI</big>
+The Conquer GUI is the central place for monitoring your kingdom. Once in a session, you can view it by pressing the inventory key (I), or by punching/right-clicking the keep node.
+"""
+
+
+def test_conquer():
+	assert html_to_minetest(conquer_html)["body"].strip() == conquer_expected.strip()
+
+
+def test_images():
+	html = """
+		<img src="/path/to/img.png">
+	"""
+
+	expected = "<img name=image_0 width=128 height=128>"
+	result = html_to_minetest(html)
+	assert result["body"].strip() == expected.strip()
+	assert len(result["images"]) == 1
+	assert result["images"]["image_0"] == "/path/to/img.png"
+
+
+def test_bullets():
+	html = """
+		<ul>
+			<li>One</li>
+			<li>two three</li>
+			<li>four</li>
+		</ul>
+	"""
+
+	expected = "• One\n• two three\n• four\n"
+	result = html_to_minetest(html)
+	assert result["body"].strip() == expected.strip()
+
+
+def test_inline():
+	html = """
+		<b>One <i>two</i> three</b>
+	"""
+
+	expected = "<b>One <i>two</i> three</b>"
+	result = html_to_minetest(html)
+	assert result["body"].strip() == expected.strip()