feat(lsp): add lspsaga.nvim

lua/astrocommunity/lsp/lspsaga-nvim/README.md

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+# lspsaga.nvim
+
+improve neovim lsp experience
+
+**Repository:** <https://github.com/nvimdev/lspsaga.nvim>

lua/astrocommunity/lsp/lspsaga-nvim/init.lua

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+return {
+  "nvimdev/lspsaga.nvim",
+  event = "LspAttach",
+  cmd = "Lspsaga",
+  dependencies = {
+    "nvim-treesitter/nvim-treesitter",
+    {
+      "AstroNvim/astrocore",
+      opts = function(_, opts)
+        local maps = opts.mappings
+        maps.n["]d"] = { "<Cmd>Lspsaga diagnostic_jump_next<CR>", desc = "Next diagnostic" }
+        maps.n["[d"] = { "<Cmd>Lspsaga diagnostic_jump_prev<CR>", desc = "Previous diagnostic" }
+      end,
+    },
+    {
+      "AstroNvim/astrolsp",
+      opts = function(_, opts)
+        local maps = opts.mappings
+        maps.n["K"] = { "<Cmd>Lspsaga hover_doc<CR>", desc = "Hover symbol details", cond = "textDocument/hover" }
+
+        -- call hierarchy
+        maps.n["<Leader>lc"] =
+          { "<Cmd>Lspsaga incoming_calls<CR>", desc = "Incoming calls", cond = "callHierarchy/incomingCalls" }
+        maps.n["<Leader>lC"] =
+          { "<Cmd>Lspsaga outgoing_calls<CR>", desc = "Outgoing calls", cond = "callHierarchy/outgoingCalls" }
+
+        -- code action
+        maps.n["<Leader>la"] =
+          { "<Cmd>Lspsaga code_action<CR>", desc = "LSP code action", cond = "textDocument/codeAction" }
+        maps.x["<Leader>la"] =
+          { ":<C-U>Lspsaga code_action<CR>", desc = "LSP code action", cond = "textDocument/codeAction" }
+
+        -- definition
+        maps.n["<Leader>lp"] =
+          { "<Cmd>Lspsaga peek_definition<CR>", desc = "Peek definition", cond = "textDocument/definition" }
+
+        -- outline
+        maps.n["<Leader>lS"] =
+          { "<Cmd>Lspsaga outline<CR>", desc = "Symbols outline", cond = "textDocument/documentSymbol" }
+
+        -- references
+        maps.n["<Leader>lR"] = {
+          "<Cmd>Lspsaga finder<CR>",
+          desc = "Search references",
+          cond = function(client)
+            return client.supports_method "textDocument/references"
+              or client.supports_method "textDocument/implementation"
+          end,
+        }
+
+        -- rename
+        maps.n["<Leader>lr"] =
+          { "<Cmd>Lspsaga rename<CR>", desc = "Rename current symbol", cond = "textDocument/rename" }
+      end,
+    },
+  },
+  opts = function()
+    return {
+      code_action = { extend_gitsigns = require("astrocore").is_available "gitsigns.nvim" },
+      lightbulb = { sign = false },
+      ui = { code_action = require("astroui").get_icon("DiagnosticHint", 0, true) },
+    }
+  end,
+}