Updated Panjabi support

[punjab]

Updated Panjabi Support to babel.

[punjab]

Also update all references of Punjabi to Panjabi as per - According to Shackle(2003)[28], the word Panjabi was referred to as a language for the first time by Grierson[19]. In his 1916 Linguistic Survey of India [19], he coined the term “Panjabi” as the language of eastern side of Panj-Aab, or land of five rivers, and distinguished it from languages spoken in Western parts of Indo-Aryan territory, which he referred to as Lehandi [19]. https://www.scribd.com/document/455130962/Arvinder-Kang

[jbezos]

Thank you very much. I have a new release planned for next week. You have forgotten to credit your work, but I can add it myself.

I’m aware there are two customary names. Even if it can be argued Panjabi is the most correct, English names in babel stick to those provided in the Unicode CLDR, and currently it’s Punjabi (see https://github.com/unicode-org/cldr/blob/main/common/main/en.xml). There is an explanation on the locale names here: https://latex3.github.io/babel/guides/locale-naming.html.