Add HS Emden/Leer template for academic writing

[TobiBeh]

I am submitting

• a new package
• an update for a package

Description: The HS-Emden-Leer-Typst-Template provides a clean, professional template for academic writing at Hochschule Emden/Leer. It features comprehensive document structure with title page, abstract, table of contents, lists of figures/tables, and declaration of independent processing. The template supports multiple authors, company information, multilingual content (English/German), and glossary/abbreviation handling. It streamlines academic formatting to help students produce well-structured, properly formatted theses and reports that follow academic standards.

I have read and followed the submission guidelines and, in particular, I

• selected a name that isn't the most obvious or canonical name for what the package does
• added a typst.toml file with all required keys
• added a README.md with documentation for my package
• have chosen a license and added a LICENSE file or linked one in my README.md
• tested my package locally on my system and it worked
• excluded PDFs or README images, if any, but not the LICENSE

• ensured that my package is licensed such that users can use and distribute the contents of its template directory without restriction, after modifying them through normal use.