tools: tools version check logic is broken with go 1.18

[hyangah]

As reported in golang/go#50085 go 1.18 changes the encoding of the build info.
That means, if a tool is compiled with go1.18 and VS Code is configured to work with different versions of Go, go version -m command will fail.

The extension currently relies on go version -m for two things

• Diagnosis tool that retrieves tools versions
  This will affect only diagnosis. In this case we need to request users to reinstall all tools.

• Tools update & consistency check logic:

  vscode-go/src/goInstallTools.ts

  Line 673 in ed978a6

  export const inspectGoToolVersion = defaultInspectGoToolVersion;

  
  This will stop tools update notification and compatibility check.

We thought about utilizing go version -m to improve our tool update logic, but now I am afraid that this is an evidence that we shouldn't rely on go version -m unless the go version is the latest.

Currently the extension does not have logic to install the latest go version, or allow users to use different toolchains for tool management (probably we should. #825).

[gopherbot]

Change https://golang.org/cl/382159 mentions this issue: src/goMain: use inspectGoToolVersion instead of runGoVersionM

[gopherbot]

Change https://go.dev/cl/382159 mentions this issue: src/goMain: use inspectGoToolVersion instead of runGoVersionM

[hyangah]

With the changes:

• Diagnosis tool ("Go: Locate Configured Go Tools") will not crash, but report versions are unknown when tools were compiled with go1.18+.

	go:	/Users/hakim/sdk/go1.17.7/bin/go: go version go1.17.7 darwin/amd64

	go-outline:	/Users/hakim/go/bin/go-outline	(version: unknown - )
	gotests:	/Users/hakim/go/bin/gotests	(version: unknown - )
	gomodifytags:	/Users/hakim/go/bin/gomodifytags	(version: unknown - )
	impl:	/Users/hakim/go/bin/impl	(version: unknown - )
	goplay:	/Users/hakim/go/bin/goplay	(version: unknown - )
	dlv:	/Users/hakim/go/bin/dlv	(version: unknown - )
	staticcheck:	/Users/hakim/go/bin/staticcheck	(version: unknown - )
	gopls:	/Users/hakim/go/bin/gopls	(version: v0.7.5 built with go: go1.17.7)

• Tools update & consistency check logic: shouldUpdateTools will be false and not insist on updating when the go version is older.

• Gopls update logic will continue to use gopls version.

Closing.