Add alpha release publication GitHub workflow

[frankhinek]

This PR primarily adds a new GitHub Actions workflow to enable on-demand publishing of alpha releases. The contributing guide was updated to reflect the versioning scheme and publication process for general consumption and alpha releases.

Additionally, a few minor tweaks were made to existing GitHub Action workflows, including renaming the dev site notification workflow definition.

All workflows were tested using a dummy repo I maintain to ensure that the GH runs and NPM publishing work as intended.

[codecov]

Codecov Report

Merging #115 (f9d3fd5) into main (6e26796) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #115   +/-   ##
=======================================
  Coverage   65.97%   65.97%           
=======================================
  Files          31       31           
  Lines        3447     3447           
  Branches      195      195           
=======================================
  Hits         2274     2274           
  Misses       1171     1171           
  Partials        2        2           

Components	Coverage Δ
crypto	0.00% <ø> (ø)
dids	48.61% <ø> (ø)
web5	81.32% <ø> (ø)
web5-agent	0.00% <ø> (ø)
web5-proxy-agent	0.00% <ø> (ø)
web5-user-agent	79.49% <ø> (ø)

[mistermoe]

@frankhinek this is awesome.

only question that comes to mind is: can you run actions on a specific branch? i noticed workflow_dispatch as the trigger (which allows for running the action via the github UI). does workflow_dispatch need a specific input to specify the branch it should run on?

e.g.

on:
  workflow_dispatch:
    inputs:
      branch_name:
        description: 'Branch to run on'
        required: true
        default: 'main'

[frankhinek]

only question that comes to mind is: can you run actions on a specific branch? i noticed workflow_dispatch as the trigger (which allows for running the action via the github UI). does workflow_dispatch need a specific input to specify the branch it should run on?

@mistermoe Yes, you can run on a specific branch. No, workflow dispatch inputs aren't necessary nor ideal because they are free form text input and prone to typos. GitHub UI automatically provides a drop-down menu populated with the actual branch names:

[mistermoe]