[minor] added new bash script for converting this app to a custom module

[patch] updated all dependencies

[patch] removed `platform` and introduced `pkg`

[patch] added info about SQL code generation
[patch] added info about SQL migrations
[patch] introduced Open telemetry usage (only in README, todo: update code)

[patch] updated all dependencies

[patch] updated with dependency flow details, and some other proof re…

…ading

[patch] added sample template to show html rendering with templates

[patch] refactored where HTTP related templates, static files etc. are kept

[minor] added error handling details

[patch] added missing argument for logger.New

[patch] added info on testing

[-] added Go report card badge

[patch] added docker to table of contents

[patch] added some files to the directory tree
[patch] Updated info on datastore package
[patch] added screenshots of APM for datastore
[patch] Updated info on logger
[patch] minor changes in some descriptions

[minor] added logger info

[patch] updated server structure to internal/server/http instead of internal/http
[patch] added table of contents for easier navigation now that there's a lot more content