revive llvm builder utility (#154)

Pre-eliminary support for LLVM releases and resolc binary releases by streamlining the build process for all supported hosts platforms.

- Introduce the revive-llvm-builder crate with the revive-llvm builder utilty.
- Do not rely on the LLVM dependency in $PATH to decouple the system LLVM installation from the LLVM host dependency.
- Fix the emscripten build by decoupling the host and native LLVM dependencies. Thus allowing a single LLVM emscripten release that can be used on any host platform.
- An example Dockerfile building an alpine container with a fully statically linked resolc ELF binary.
- Remove the Debian builder utilities and workflow.

.gitignore

@@ -1,4 +1,5 @@
 /target
+target-llvm
 *.dot
 .vscode/
 .DS_Store
@@ -6,9 +7,7 @@
 /*.yul
 /*.ll
 /*.s
-/llvm-project
-/llvm18.0
-/llvm18.0-emscripten
+/llvm*
 node_modules
 artifacts
 tmp
@@ -16,3 +15,4 @@ package-lock.json
 /*.html
 /build
 soljson.js
+emsdk