feat: support new file menu entry order

[skjnldsv]

• templateName is not used as the file creation is now handled by the developers themselves
• Renamed if to enabled to match other APIs
• To ensure we can have a custom order, I also added an order key

Before	After with custom order

[skjnldsv]

Ping! Please approve @susnux @juliushaertl

[codecov]

Codecov Report

Merging #781 (732f49c) into master (999d5d0) will decrease coverage by 0.19%.
The diff coverage is 81.81%.

❗ Current head 732f49c differs from pull request most recent head 37c3c61. Consider uploading reports for the commit 37c3c61 to get more accurate results

@@            Coverage Diff             @@
##           master     #781      +/-   ##
==========================================
- Coverage   77.80%   77.61%   -0.19%     
==========================================
  Files          17       17              
  Lines         419      420       +1     
  Branches      111      111              
==========================================
  Hits          326      326              
- Misses         92       93       +1     
  Partials        1        1              

Files	Coverage Δ
lib/newFileMenu.ts	100.00% <100.00%> (+2.94%)	⬆️
lib/index.ts	83.33% <50.00%> (-16.67%)	⬇️