feat: add ts solution to lc/lcof2 problems (#1450)

lc No.0067 & lcof2 No.002.Add Binary

Author: thinkasany

lcof2/剑指 Offer II 002. 二进制加法/README.md

@@ -134,6 +134,12 @@ func addBinary(a string, b string) string {
 
 ### **TypeScript**
 
+```ts
+function addBinary(a: string, b: string): string {
+    return (BigInt('0b' + a) + BigInt('0b' + b)).toString(2);
+}
+```
+
 ```ts
 function addBinary(a: string, b: string): string {
     let i = a.length - 1;

solution/0000-0099/0067.Add Binary/README.md

@@ -130,6 +130,12 @@ func addBinary(a string, b string) string {
 
 ### **TypeScript**
 
+```ts
+function addBinary(a: string, b: string): string {
+    return (BigInt('0b' + a) + BigInt('0b' + b)).toString(2);
+}
+```
+
 ```ts
 function addBinary(a: string, b: string): string {
     let i = a.length - 1;

solution/0000-0099/0067.Add Binary/README_EN.md

@@ -109,6 +109,12 @@ func addBinary(a string, b string) string {
 
 ### **TypeScript**
 
+```ts
+function addBinary(a: string, b: string): string {
+    return (BigInt('0b' + a) + BigInt('0b' + b)).toString(2);
+}
+```
+
 ```ts
 function addBinary(a: string, b: string): string {
     let i = a.length - 1;