add type="password" to OpenAI api key

provided solution is based in [this reference](https://stackoverflow.com/questions/57392773/error-type-attribute-cannot-be-dynamic-if-input-uses-two-way-binding/75298645#75298645)

src/lib/components/FieldInput.svelte

@@ -8,7 +8,7 @@
 	export let placeholder: LocalizedString | string | undefined = undefined;
 	export let disabled: boolean | undefined = false;
 	export let value: string | number | undefined = undefined;
-	export let type: 'text' | 'number' = 'text';
+	export let type: 'text' | 'number' | 'password' = 'text';
 
 	// Props for numeric inputs
 	export let min: number | undefined = undefined;
@@ -47,7 +47,7 @@
 			id={name}
 			{disabled}
 			{placeholder}
-			type="text"
+			{...{ type }}
 			bind:value
 			on:input
 			on:keyup

src/routes/settings/OpenAI.svelte

@@ -67,6 +67,7 @@
 		label={$LL.apiKey()}
 		bind:value={openaiApiKey}
 		placeholder={$LL.noApiKey()}
+		type="password"
 	>
 		<svelte:fragment slot="help">
 			{#if openaiApiKey === 'ollama' || openaiServerStatus === 'disconnected'}