[Query Copilot] Sample Prompt implementation and other (#1489)

* Sample Prompts and ComboBox implementation

* Adding DeletePopup and SamplePrompts

* Implementation of Delete/Copy code buttons

* Adjusted changes based on the comments for Modal

* Reverded implementation of inline prompt

* Updated function

* Replacing const to function

* Unused icons deleted

* Comments removed

* Additional styling based on designs

* Test snapshots

* Implementation of popup for copying code

* Tests updated/added

* Background color changed

* Resolving lint issue

* CopyPopup snapshot updated

* Merged with master

* Implementations fixed based on comments

* Test Snapshots updated

* Query copilot updated

* Resolving minor bug with Delete popup

---------

Co-authored-by: Predrag Klepic <v-prklepic@microsoft.com>

src/Explorer/QueryCopilot/SamplePrompts/SamplePrompts.test.tsx

@@ -0,0 +1,26 @@
+import { shallow } from "enzyme";
+import React from "react";
+import { SamplePrompts, SamplePromptsProps } from "./SamplePrompts";
+
+describe("Sample Prompts snapshot test", () => {
+  it("should render properly if isSamplePromptsOpen is true", () => {
+    const sampleProps: SamplePromptsProps = {
+      isSamplePromptsOpen: true,
+      setIsSamplePromptsOpen: () => undefined,
+      setTextBox: () => undefined,
+    };
+
+    const wrapper = shallow(<SamplePrompts sampleProps={sampleProps} />);
+    expect(wrapper).toMatchSnapshot();
+  });
+
+  it("should render properly if isSamplePromptsOpen is false", () => {
+    const sampleProps: SamplePromptsProps = {
+      isSamplePromptsOpen: false,
+      setIsSamplePromptsOpen: () => undefined,
+      setTextBox: () => undefined,
+    };
+    const wrapper = shallow(<SamplePrompts sampleProps={sampleProps} />);
+    expect(wrapper).toMatchSnapshot();
+  });
+});