feat: customize the streak stat

Issue NO: [alexandresanlim#467](alexandresanlim#467)

**Before**

## ⏱ Streak Stats [🔝](#welcome-badges-4-readmemd-profile)

| Badge                                                                                            | URL                                                                 |
| ------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------- |
| <img width='200' src="https://github-readme-streak-stats.herokuapp.com/?user=alexandresanlim" /> | `https://github-readme-streak-stats.herokuapp.com/?user={username}` |

 **After**

## ⏱ Streak Stats [🔝](#welcome-badges-4-readmemd-profile)

* built-in themes:  `dark`,  `radical`,  `merko`,  `gruvbox`,  `tokyonight`,  `onedark`,  `cobalt`,  `synthwave`,  `highcontrast`,  `dracula`

| Badge                                                                                            | URL                                                                 | Theme |
| ------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------- | ----- |
| <img width='200' src="https://github-readme-streak-stats.herokuapp.com/?user=alexandresanlim" /> | `https://github-readme-streak-stats.herokuapp.com/?user={username}` | `https://github-readme-streak-stats.herokuapp.com/?user={username}&theme={theme_name}` |

Author: dejavuhyo

README.md

@@ -1035,9 +1035,11 @@ Improve your README.md profile with these amazing badges. See a sample [here](ht
 
 ## ⏱ Streak Stats [🔝](#welcome-badges-4-readmemd-profile)
 
-| Badge                                                                                            | URL                                                                 |
-| ------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------- |
-| <img width='200' src="https://github-readme-streak-stats.herokuapp.com/?user=alexandresanlim" /> | `https://github-readme-streak-stats.herokuapp.com/?user={username}` |
+* built-in themes:  `dark`,  `radical`,  `merko`,  `gruvbox`,  `tokyonight`,  `onedark`,  `cobalt`,  `synthwave`,  `highcontrast`,  `dracula`
+
+| Badge                                                                                            | URL                                                                | Theme                                                                                            |
+| ------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------- | ------------------------------------------------------------------------------------------------ |
+| <img width='200' src="https://github-readme-streak-stats.herokuapp.com/?user=alexandresanlim" /> | `https://github-readme-streak-stats.herokuapp.com/?user={username}` | `https://github-readme-streak-stats.herokuapp.com/?user={username}&theme={theme_name}` |
 
 ## 🏆 Trophy Stats [🔝](#welcome-badges-4-readmemd-profile)