Add Timor-Leste holidays (#1516)

Co-authored-by: Arkadii Yakovets <2201626+arkid15r@users.noreply.github.com>

README.rst

@@ -117,7 +117,7 @@ Available Countries
 .. _ISO 639-1 code: https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
 .. _ISO 639-2 code: https://en.wikipedia.org/wiki/List_of_ISO_639-2_codes
 
-We currently support 137 country codes. The standard way to refer to a country
+We currently support 138 country codes. The standard way to refer to a country
 is by using its `ISO 3166-1 alpha-2 code`_, the same used for domain names, and
 for a subdivision its `ISO 3166-2 code`_. Some of the countries support more
 than one language for holiday names output.
@@ -752,6 +752,11 @@ The list of supported countries, their subdivisions, supported languages and cat
      -
      - en_US, **th**
      - ARMED_FORCES, BANK, GOVERNMENT, **PUBLIC**, SCHOOL, WORKDAY
+   * - Timor Leste
+     - TL
+     -
+     - en_US, **pt_TL**, tet
+     - GOVERNMENT, **PUBLIC**, WORKDAY
    * - Tunisia
      - TN
      -

holidays/countries/__init__.py

@@ -132,6 +132,7 @@
 from .taiwan import Taiwan, TW, TWN
 from .tanzania import Tanzania, TZ, TZA
 from .thailand import Thailand, TH, THA
+from .timor_leste import TimorLeste, TL, TLS
 from .tunisia import Tunisia, TN, TUN
 from .turkey import Turkey, TR, TUR
 from .ukraine import Ukraine, UA, UKR