Add HCA OAuth Instructions to DEVELOPMENT.md

[matmanna]

Adds two steps necessary to actually develop Hackathon locally:

• HCA OAuth setup
• & Vite Build Step
  • right now someone running it gets the following error:

@matmanna ➜ hackatime (revokable_api_tokens) $ docker compose exec web /bin/bash
app# bin/dev
Installing foreman...
Fetching foreman-0.90.0.gem
Successfully installed foreman-0.90.0
1 gem installed

A new release of RubyGems is available: 3.6.9 → 4.0.7!
Run `gem update --system 4.0.7` to update your installation.

15:26:53 web.1  | started with pid 1550
15:26:53 css.1  | started with pid 1551
15:26:53 vite.1 | started with pid 1552
15:26:53 ssr.1  | started with pid 1553
15:26:56 ssr.1  | /usr/local/bundle/gems/vite_ruby-3.9.3/lib/vite_ruby/cli/ssr.rb:17:in 'ViteRuby::CLI::SSR#call': No ssr entrypoint found `public/vite-ssr/ssr.{js,mjs,cjs}`. Have you run bin/vite build --ssr? (ArgumentError)
15:26:56 ssr.1  | 
15:26:56 ssr.1  |     raise ArgumentError, "No ssr entrypoint found `#{ViteRuby.config.ssr_output_dir.relative_path_from(ViteRuby.config.root)}/ssr.{#{JS_EXTENSIONS.join(",")}}`. Have you run bin/vite build --ssr?" unless ssr_entrypoint
15:26:56 ssr.1  |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
15:26:56 ssr.1  |       from /usr/local/bundle/gems/dry-cli-1.4.1/lib/dry/cli.rb:124:in 'Dry::CLI#perform_registry'
15:26:56 ssr.1  |       from /usr/local/bundle/gems/dry-cli-1.4.1/lib/dry/cli.rb:66:in 'Dry::CLI#call'
15:26:56 ssr.1  |       from /usr/local/bundle/gems/vite_ruby-3.9.3/exe/vite:12:in '<top (required)>'
15:26:56 ssr.1  |       from bin/vite:16:in 'Kernel#load'
15:26:56 ssr.1  |       from bin/vite:16:in '<main>'
15:26:57 ssr.1  | exited with code 1

[greptile-apps]

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[skyfallwastaken]

Thank you! Should make it a fair bit easier for new folks to get started :-)

[skyfallwastaken]

@matmanna Please make sure your branch is up-to-date with Hackatime's main and request a re-review! Won't let me merge otherwise :P