Get autocomplete working, fix telescope settings, add java language server

ftplugin/java.lua

@@ -0,0 +1,5 @@
+local config = {
+	cmd = { "/home/aselimov/.local/share/nvim/mason/bin/jdtls" },
+	root_dir = vim.fs.dirname(vim.fs.find({ "gradlew", ".git", "mvnw" }, { upward = true })[1]),
+}
+require("jdtls").start_or_attach(config)

ftplugin/java.vim

@@ -1,2 +0,0 @@
-set colorcolumn=120
-set tw=120