feat: add plugins cli, external plugin support, plugin template

.coveragerc

@@ -1,5 +1,8 @@
 [run]
 branch = True
+omit =
+    mcpgateway/alembic/*
+    */__init__.py
 
 [report]
 exclude_lines =

.env.example

@@ -163,3 +163,14 @@ SKIP_SSL_VERIFY=false
 # Header Passthrough (WARNING: Security implications)
 ENABLE_HEADER_PASSTHROUGH=false
 DEFAULT_PASSTHROUGH_HEADERS=["X-Tenant-Id", "X-Trace-Id"]
+
+# Enable auto-completion for plugins CLI
+PLUGINS_CLI_COMPLETION=false
+
+# Set markup mode for plugins CLI
+# Valid options:
+#  rich: use rich markup
+#  markdown: allow markdown in help strings
+#  disabled: disable markup
+# If unset (commented out), uses "rich" if rich is detected, otherwise disables it.
+PLUGINS_CLI_MARKUP_MODE=rich

.gitignore

@@ -76,6 +76,7 @@ command_outputs.md
 .ica.env
 ./snakefood.png
 ./snakefood.svg
+./playground
 
 .attic
 .vscode/settings.json

MANIFEST.in

@@ -30,6 +30,7 @@ include *.txt
 recursive-include async_testing *.py
 recursive-include async_testing *.yaml
 recursive-include examples *.yaml
+recursive-include plugin_templates *
 
 # 3️⃣  Tooling/lint configuration dot-files (explicit so they're not lost)
 include .env.make

Makefile

@@ -55,8 +55,8 @@ CONTAINER_MEMORY = 2048m
 CONTAINER_CPUS   = 2
 
 # Virtual-environment variables
-VENVS_DIR := $(HOME)/.venv
-VENV_DIR  := $(VENVS_DIR)/$(PROJECT_NAME)
+VENVS_DIR ?= $(HOME)/.venv
+VENV_DIR  ?= $(VENVS_DIR)/$(PROJECT_NAME)
 
 # -----------------------------------------------------------------------------
 # OS Specific

copier.yml

@@ -0,0 +1,33 @@
+_subdirectory: plugin_templates/{{template_type}}
+
+template_type:
+   type: str
+   help: What plugin template would you like to use?
+   choices:
+      - native
+      - external
+
+plugin_name:
+   type: str
+   help: What is the plugin name?
+   default: MyFilter
+
+version:
+   type: str
+   help: What is the initial version of the plugin?
+   default: 0.1.0
+
+author:
+   type: str
+   help: Who is the author?
+   default: "{{ _copier_conf.data.default_author_name }}"
+
+email:
+   type: str
+   help: What's the author's e-mail?
+   default: "{{ _copier_conf.data.default_author_email }}"
+
+description:
+   type: str
+   help: Write a plugin description
+   default: A filter plugin