Comment Module: Stage 2 Support Systems and Refactoring

This PR is the second pass at porting the NetCreate Comment Manager so it can be reused in other projects that are being updated this year. It largely contains modularity improvements for universal systems:

Universal APPBUILD and APPSERV modules now in URSYS CORE
NetEndpoint, NetSocket, NetPacket now in URSYS CORE
NetEndpoint now uses new support classes ServiceMap and TransactionMgr
Typescript conversion completed and tested with NetCreate (see PR#230)

Additionally, all addons have been updated to draw from URSYS CORE. In particular:

net addon, former development home of NetEndpoint, now uses CORE
webplay addon now uses universal APPBUILD and APPSERV, with hot-reload feature enabled

SIMPLE TESTING

[x] Try existing URSYS addon commands (e.g. ur net start and ur net stop) and see if it still works by browsing to localhost:8080
[x] Try running ur webplay and browse to localhost:8080 in Chrome. Try modifying webplay.init and see if LiveReload works

PLATFORM TESTING

Update ursys.dsri.xyz deployment on Digital Ocean

[x] login via DO console as 'dsri' and pull the dev-sri/comment-module-2 branch
[x] npm ci && cd _ur
[x] nohup ur net start &
[x] browse to https://ursys.dsri.xyz/app and see if it works
[x] browse to https://ursys.dsri.xyz/app/list and see if it works

DETAILED CHANGE LIST

URSYS Core Changes

Universal AppServer and AppBuilder are now in the server-side URSYS core. This makes it possible to more-easily create server/builder addons for prototyping new systems.
NetEndpoint, NetPacket, and NetSocket have been moved into URSYS core. The net addon now imports them from URSYS core.

Network Abstraction Changes

NetEndpoint has been refactored to use two new support classes!

ServiceMap introduces the notion of a "named service" that is assigned an "address"
TransactionMgr introduces the notion of a "transaction log" of unique transaction ids mapped to functions that either "resolve" or "reject" the transaction.

The reason for the change is two-fold:

ServiceMap will allow centralization of protocol messages that will be used exclusively by system services that use URNET as its underlying transport. These are intended for auto-initializing, auto-managing core services like "Collections" and "Devices", which are critical for modular support of any persisted databases that follow our dataflow lifecycle.
TransactionMgr helps clarify the notion of what a transaction is, which may help with porting NetEndpoint to other network architectures (e.g. serverless platforms like AWS lamba).

While not a priority now, ServiceMap is a foundational element of multi-network URSYS networks; see the discussion #22

Typescript Conversion Changes

There used to be several javascript files with the .js .mjs .cjs extensions, which made interoperability between typescript files .ts .mts difficult. They have all been converted to Typescript, finally, so only .ts and .mts files are in the URSYS project.

A new @build-ursys.sh shell script is now in the root which will build URSYS CORE and URSYS ADDONS libraries into their _dist directories using ts-node-esm in "transpile-only" mode. This is a Typescript-aware wrapper for NodeJS. This script is used in NetCreate which still uses the CommonJS format that predates ES Modules.

dsriseah / ursys