enhancement: Added message to compiler error when on Apple M1

[dadepo]

Currently opening as draft:

• To get feedback on the wording of the error message.
• @ra0x3 You left a comment here stating:

I might even go as far to say we maybe should read the output of a failed forc index build and look for wasm-related output in order to present this message their as well

Not sure I totally understand the requirement here and whether the changes in this PR already satisfies this.

Description

When compilation fails and host is Apple M1, print out error message Informing user about possible missing environment vars.

Closes #889

Currently the message printed is

▪▪▪▪▪ ❌ Build failed.
For Apple Silicon macOS users the preinstalled llvm has limited WASM targets,
please install a binary with better support from Homebrew (brew install llvm)
and configuring rustc with necessary environment variables:

export LIBCLANG_PATH='/opt/homebrew/opt/llvm/lib'
export LDFLAGS='-L/opt/homebrew/opt/llvm/lib'
export CPPFLAGS='-I/opt/homebrew/opt/llvm/include'                                                                                                                                   Error: ❌ Failed to build index.

Changelog

• Added a private error_message function that, on compilation error, includes information about setting env variables if compilation fails on Apple M1s.

[ra0x3]

@dadepo

• I think this is fair
• However, I do think this message should only be logged when the -v --verbose flag is included

[dadepo]

@dadepo

• I think this is fair
• However, I do think this message should only be logged when the -v --verbose flag is included

@ra0x3 Updated to as suggested. I only extended the error message for one of the 3 error paths, as I was not sure if the other two can be due to the missing env variables.

[ra0x3]

@dadepo

• Sorry CI is failing here :( still trying to get this release issue resolved
• In the meantime, this PR looks ok w/ me and I'll defer to @lostman or @deekerno for any additional feedback
• We will get this merged ASAP :)

[dadepo]

@lostman Thanks. I have accepted your suggestions.

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