feat: update solutions to lc problem: No.12

Author: thinkasany

solution/0000-0099/0012.Integer to Roman/README.md

@@ -173,6 +173,39 @@ func intToRoman(num int) string {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function intToRoman(num: number): string {
+    const nums: number[] = [
+        1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1,
+    ];
+    const romans: string[] = [
+        'M',
+        'CM',
+        'D',
+        'CD',
+        'C',
+        'XC',
+        'L',
+        'XL',
+        'X',
+        'IX',
+        'V',
+        'IV',
+        'I',
+    ];
+    let ans: string = '';
+    for (let i = 0; i < nums.length; ++i) {
+        while (num >= nums[i]) {
+            num -= nums[i];
+            ans += romans[i];
+        }
+    }
+    return ans;
+}
+```
+
 ### **...**
 
 ```

solution/0000-0099/0012.Integer to Roman/README_EN.md

@@ -152,6 +152,39 @@ func intToRoman(num int) string {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function intToRoman(num: number): string {
+    const nums: number[] = [
+        1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1,
+    ];
+    const romans: string[] = [
+        'M',
+        'CM',
+        'D',
+        'CD',
+        'C',
+        'XC',
+        'L',
+        'XL',
+        'X',
+        'IX',
+        'V',
+        'IV',
+        'I',
+    ];
+    let ans: string = '';
+    for (let i = 0; i < nums.length; ++i) {
+        while (num >= nums[i]) {
+            num -= nums[i];
+            ans += romans[i];
+        }
+    }
+    return ans;
+}
+```
+
 ### **...**
 
 ```

solution/0000-0099/0012.Integer to Roman/Solution.ts

@@ -0,0 +1,28 @@
+function intToRoman(num: number): string {
+    const nums: number[] = [
+        1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1,
+    ];
+    const romans: string[] = [
+        'M',
+        'CM',
+        'D',
+        'CD',
+        'C',
+        'XC',
+        'L',
+        'XL',
+        'X',
+        'IX',
+        'V',
+        'IV',
+        'I',
+    ];
+    let ans: string = '';
+    for (let i = 0; i < nums.length; ++i) {
+        while (num >= nums[i]) {
+            num -= nums[i];
+            ans += romans[i];
+        }
+    }
+    return ans;
+}