fix(windows): install bugfixes for workspaces, tarballs, and relative paths (#8813)

* more tests

* update migration.zig

* fix up paths

* update tests

* update tests

* test

* test

* update registry tests

* comments

* early exit if stream is invalid

* dont pass invalid_fd to openFileAtWindows

* fix merge

* misc crash fix

* make this use optional pointers instead of 0xaa

* ensure absolute paths are propagated properly

* package.json expects forward slash

* this assert was invalid

* add panic checks

* pass bun-remove

* more panic checks

* test: pass bun-add

* querying these hangs outside bun too

* fix compile error from merge conflict resolution

* use compileError instead of comptime unreachable

* tidy

* bunx: check for the .exe bin extension

* bunx: another route to make cache path if it doesnt exist

* install: another case of FolderResolution.getOrPut expecting absolute path

* fix a bun install crash

* dont print zig stack trace if bun install fails

* test: pass bun-link

* test: bunx: add more expects

* test: bun-install-registry: pass

* test: bun-install: pass

* test: bun-pm: pass

* fix merge main error

* fix posix tests

* fix last failing test in bun-install.test.ts
symlink difference between platforms

* bun-install-registry.test.ts fix

* bun-run.test.ts: remove stray console log

---------

Co-authored-by: Meghan Denny <meghan@bun.sh>
Co-authored-by: Meghan Denny <hello@nektro.net>
Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>

src/string.zig

@@ -380,7 +380,7 @@ pub const String = extern struct {
         return switch (@TypeOf(os_path)) {
             []const u8 => createUTF8(os_path),
             []const u16 => createUTF16(os_path),
-            else => comptime unreachable,
+            else => @compileError("unreachable"),
         };
     }