split icons to their own files

src/chat_gui/icons/cloud.cpp

@@ -0,0 +1,41 @@
+#include "./cloud.hpp"
+
+#include <array>
+
+void drawIconCloud(
+	const ImVec2 p0,
+	const ImVec2 p1_o,
+	const ImU32 col_main,
+	const ImU32 col_back
+) {
+	std::array<ImVec2, 19> points {{
+		{0.2f, 0.9f},
+		{0.8f, 0.9f},
+		{0.9f, 0.8f},
+		{0.9f, 0.7f},
+		{0.7f, 0.7f},
+		{0.9f, 0.5f},
+		{0.9f, 0.4f},
+		{0.8f, 0.2f},
+		{0.6f, 0.2f},
+		{0.5f, 0.3f},
+		{0.5f, 0.5f},
+		{0.4f, 0.4f},
+		{0.3f, 0.4f},
+		{0.2f, 0.5f},
+		{0.2f, 0.6f},
+		{0.3f, 0.7f},
+		{0.1f, 0.7f},
+		{0.1f, 0.8f},
+		{0.2f, 0.9f},
+	}};
+	for (auto& v : points) {
+		v.y -= 0.1f;
+		v = {p0.x + p1_o.x*v.x, p0.y + p1_o.y*v.y};
+	}
+	// the circle looks bad in light mode
+	//ImGui::GetWindowDrawList()->AddCircleFilled({p0.x + p1_o.x*0.5f, p0.y + p1_o.y*0.5f}, p1_o.x*0.5f, col_back);
+	ImGui::GetWindowDrawList()->AddPolyline(points.data(), points.size(), col_back, ImDrawFlags_None, 4.f);
+	ImGui::GetWindowDrawList()->AddPolyline(points.data(), points.size(), col_main, ImDrawFlags_None, 1.5f);
+}
+