Create Note with Query as title from within Khoj Search Modal

This follows expected behavior for obsidain search modals
E.g Ominsearch and default Obsidian search.

The note creation code is borrowed from Omnisearch.

Resolves #133

src/interface/obsidian/src/utils.ts

@@ -1,4 +1,4 @@
-import { FileSystemAdapter, Notice, RequestUrlParam, request, Vault } from 'obsidian';
+import { FileSystemAdapter, Notice, RequestUrlParam, request, Vault, Modal } from 'obsidian';
 import { KhojSetting } from 'src/settings'
 
 export function getVaultAbsolutePath(vault: Vault): string {
@@ -139,3 +139,35 @@ export async function updateKhojBackend(khojUrl: string, khojConfig: Object) {
 function getIndexDirectoryFromBackendConfig(filepath: string) {
     return filepath.split("/").slice(0, -1).join("/");
 }
+
+export async function createNote(name: string, newLeaf = false): Promise<void> {
+    try {
+      let pathPrefix: string
+      switch (app.vault.getConfig('newFileLocation')) {
+        case 'current':
+          pathPrefix = (app.workspace.getActiveFile()?.parent.path ?? '') + '/'
+          break
+        case 'folder':
+          pathPrefix = this.app.vault.getConfig('newFileFolderPath') + '/'
+          break
+        default: // 'root'
+          pathPrefix = ''
+          break
+      }
+      await app.workspace.openLinkText(`${pathPrefix}${name}.md`, '', newLeaf)
+    } catch (e) {
+      console.error('Khoj: Could not create note.\n' + (e as any).message);
+      throw e
+    }
+  }
+
+export async function createNoteAndCloseModal(query: string, modal: Modal, opt?: { newLeaf: boolean }): Promise<void> {
+    try {
+        await createNote(query, opt?.newLeaf);
+    }
+    catch (e) {
+        new Notice((e as Error).message)
+        return
+    }
+    modal.close();
+}