v0.2.0 of the dCollage boilerplate

v0.2.0 of the boilerplate

Includes number of updates to the boilerplate based on work done in preparation to reuse it for the OBTS game.
Note that since this was from a game build there are some components which may not be used in other types of work but it made sense to keep these as examples. We may want to have the barebones for either available in one potentially splitting off components as their own linked resources in the future.

Key updates:

• adds a gitignore
• tweaks eslint to go easy on order of definition
• sets up sample audio and graphic imports
• includes some new items related to use for game dev (best score/local storage, gameOver function, etc.)
• tweaks to HTML to include CDN version of pixi (saves 1Mb+ file size)
• tweaks to HTML to remove injection, just loads up app.js
• adds terser to build and other nuances to dev and build scripts
• adds version number constant pulled from package file, logged on startup
• refactors some existing structures, removes old index in lieu of main.js