Add a new feature to support building a firmware

[yoichiro]

This pull request provides a new feature to build a firmware in the backend of Remap server.

For keyboard registers/degisners

A new tab "BUILD" is added in the keyboard management page which the keyboard is already approved. The registerer/degisner adds firmware files like the following:

• Files in QMK_HOME/keyboards/KB_NAME directory (ex. info.json, config.h and etc.)
• Files in QMK_HOME/keyboards/KB_NAME/keymaps/KM_NAME directory (ex. keymap.c, rules.mk and etc.)

The registerer/designer can embed customization points in each file. <remap /> tag is used to embed them.

• Text (single line) - <remap name="Startup Sound" type="text" default="M__NOTE(_C7, 30), M__NOTE(_C6, 30)" />
• Selection - <remap name="Audio Enable" type="select" default="no" options="yes,no" />
• Number - <remap name="Tapping Term" type="number" default="130" />

For keyboard users

A new "BUILD" tab is added in each keyboard catalog page.

When pressing the "BUILD FIRMWARE" button, a new dialog is displayed. The dialog has a UI to specify customization points which are detected from each registered firmware file. Users can sprcify the parameter value of each customization point on the dialog.

When pressing the "BUILD" button, a new building firmware task is registered. The time to build the firmware will be in a few minutes.

When completing the building task, the standard output/error will be shown.

If the building task is succeeded, users can download and flash the firmware binary file directly from the page.

Limitation logics

• Only authenticated users can register a build task.
• A user can only register one build task at a time. If a task is already registered by the user, the second registration request is rejected.
• All tasks are addressed sequentially using Cloud Tasks. Each waiting time is long according to the count of queued tasks.

Implementation

• This Remap frontend sends a request to the Cloud Functions: create-firmware-building-task-command.ts
• The Cloud Functions queues a request to Cloud Tasks.
• The Cloud Tasks sends a request to the Remap Build Server.
• The build server builds a firmware and sends it to Cloud Storage.