feat: Initial clean release of CHM

packages/app-desktop/services/plugins/styles/index.scss

@@ -0,0 +1,3 @@
+@use './plugin-user-webview.scss';
+@use './user-dialog-wrapper.scss';
+@use './user-dialog-button-bar.scss';

packages/app-desktop/services/plugins/styles/plugin-user-webview.scss

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+
+.plugin-user-webview {
+	padding: 0;
+	margin: 0;
+	border: none;
+	width: 100%;
+	height: 100%;
+
+	&.-border-bottom {
+		border-bottom: 1px solid var(--joplin-divider-color);
+	}
+
+	&.-fit-to-content {
+		width: var(--content-width);
+		height: var(--content-height);
+	}
+}

packages/app-desktop/services/plugins/styles/user-dialog-button-bar.scss

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+
+.user-dialog-button-bar {
+	display: flex;
+	width: 100%;
+	box-sizing: border-box;
+	justify-content: flex-end;
+	padding-top: var(--joplin-main-padding);
+}

packages/app-desktop/services/plugins/styles/user-dialog-wrapper.scss

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+
+.user-dialog-wrapper {
+	display: flex;
+	flex: 1;
+}