Unite some frontend repositories

[LuizAsFight]

we currently have many repos which makes hard to be updating and changing versions across them, bringing lots of overhead work in our development cycle

current repos are: fuels-wallet fuels-npm-packs fuel-connectors fuel-explorer

this issues proposes to unite following repos, migrating them to live inside fuel-explorer in the format of new packages

• fuels-wallet
• fuels-npm-packs

after this change, frontend stack will have only this repos:

• fuel-connectors
• fuel-explorer

benefits:

• single place to update our stack to new sway, fuel-core, TS SDK, etc...
• remove overhead of releasing versions and updating it on other repos all the time

disadvantage:

• effort for fine-tuning on CI side

PS:

• make sure we disable deprecated any npm packages that will not be maintained anymore