General Project Cleanup

* Change SwiftLint from a "Run Script" build phase to a "Run Build Tool Plugins" build phase.
    * Developers no longer need to install and update SwiftLint manually. This can be useful when other projects are using different versions of SwiftLint.
    * [SwiftLint Docs](https://github.com/realm/SwiftLint?tab=readme-ov-file#xcode-projects)
    * [WWDC 22 - Meet Swift Package Plugins](https://developer.apple.com/videos/play/wwdc2022/110359/?time=162)
* Moved several scripts into a `.scripts` directory to keep the project root organized.
* Modified `.scripts/gen_protos.sh` to intelligently update git submodules and install `swift-protobuf` when it detects issues, reducing developer friction.
* Deleted the empty unit and UI testing targets. These can be added later as we write tests. someday 🙏
* Updated the README.md to reflect the above changes, and organized a few of the sections.

.scripts/gen_protos.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# simple sanity checking for repo
+if [ ! -d "./../protobufs" ]; then
+  git submodule update --init
+fi
+
+# simple sanity checking for executable
+if [ ! -x "$(which protoc)" ]; then
+  brew install swift-protobuf
+fi
+
+protoc --proto_path=./protobufs --swift_out=./Meshtastic/Protobufs ./protobufs/meshtastic/*.proto
+
+echo "Done generating the swift files from the proto files."
+echo "Build, test, and commit changes."

.scripts/thebenternify.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+sed -i '' -e 's/GCH7VS5Y9R/6YF6QJH524/g' ./Meshtastic.xcodeproj/project.pbxproj
+sed -i '' -e 's/gvh.Meshtastic/thebentern.Meshtastic/g' ./Meshtastic.xcodeproj/project.pbxproj

.scripts/unthebenternify.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+sed -i '' -e 's/6YF6QJH524/GCH7VS5Y9R/g' ./Meshtastic.xcodeproj/project.pbxproj
+sed -i '' -e 's/thebentern.Meshtastic/gvh.Meshtastic/g' ./Meshtastic.xcodeproj/project.pbxproj