The mason build script now compiles parser.c into parser.so using cc,
so the plugin can load it via vim.treesitter.language.add() without
requiring :TSInstall (which doesn't work for custom parsers in current
nvim-treesitter).
Also bumps the package version from @0.1.0 to @0.1.1 to include the
semanticTokensProvider fix and the readlink symlink resolution fix.
The parser.so is registered as a 'share' file so mason links it to a
stable path. The plugin resolves it via exepath('tia-lsp').