Allow Custom `tex_templates.yml` File

[icedcoffeeee]

Motivation

I wanted to be able to create a custom tex_templates.yml file and reference the tex template from the custom_config.yml, without changing any source files.

Proposed changes

• default_config.yml > allow to change the template file under the tex keyword.
• tex_file_writing.yml > get template file from config before reaching for the default.

Test

1. Create custom_config.yml:

   tex:
   template_file: "custom_tex_templates.yml"
   style:
   tex_template: "custom"

2. Create custom_tex_templates.yml

   custom:
   description: ""
   compiler: xelatex
   preamble: |-
   \usepackage[english]{babel}
   \usepackage[utf8]{inputenc}
   \usepackage{fontspec}
   \setmainfont{Times New Roman}[Ligatures=NoCommon]
   \linespread{1}

3. Test File:

   class Test(Scene):
   def construct(self):
       self.add(TexText("Hello World"))

4. The new text is now in Times New Roman font.

[icedcoffeeee]

Closing as unplanned