Chore: Reorg packages (#20111)

Primarily- moving majority of the types and utils from @grafana/ui to @grafana/data

* Move types from grafana-ui to grafana-data

* Move valueFormats to grafana-data

* Move utils from grafana-ui to grafana-data

* Update imports in grafana-ui

* revert data's tsconfig change

* Update imports in grafana-runtime

* Fix import paths in grafana-ui

* Move rxjs to devDeps

* Core import updates batch 1

* Import updates batch 2

* Imports fix batch 3

* Imports fixes batch i don't know

* Fix imorts in grafana-toolkit

* Fix imports after master merge

packages/grafana-data/src/valueFormats/arithmeticFormatters.test.ts

@@ -0,0 +1,40 @@
+import { toHex, toHex0x } from './arithmeticFormatters';
+
+describe('hex', () => {
+  it('positive integer', () => {
+    const str = toHex(100, 0);
+    expect(str).toBe('64');
+  });
+  it('negative integer', () => {
+    const str = toHex(-100, 0);
+    expect(str).toBe('-64');
+  });
+  it('positive float', () => {
+    const str = toHex(50.52, 1);
+    expect(str).toBe('32.8');
+  });
+  it('negative float', () => {
+    const str = toHex(-50.333, 2);
+    expect(str).toBe('-32.547AE147AE14');
+  });
+});
+
+describe('hex 0x', () => {
+  it('positive integeter', () => {
+    const str = toHex0x(7999, 0);
+    expect(str).toBe('0x1F3F');
+  });
+  it('negative integer', () => {
+    const str = toHex0x(-584, 0);
+    expect(str).toBe('-0x248');
+  });
+
+  it('positive float', () => {
+    const str = toHex0x(74.443, 3);
+    expect(str).toBe('0x4A.716872B020C4');
+  });
+  it('negative float', () => {
+    const str = toHex0x(-65.458, 1);
+    expect(str).toBe('-0x41.8');
+  });
+});