Update docs with better config + installation instructions (#300)

* start reworking some documentation

* fuller documentation  + better docs structure

docs/environment.yml

@@ -0,0 +1,45 @@
+name: gotosocial-docs
+channels:
+  - defaults
+dependencies:
+  - _libgcc_mutex=0.1=main
+  - _openmp_mutex=4.5=1_gnu
+  - bzip2=1.0.8=h7b6447c_0
+  - ca-certificates=2021.10.26=h06a4308_2
+  - certifi=2020.6.20=pyhd3eb1b0_3
+  - ld_impl_linux-64=2.35.1=h7274673_9
+  - libffi=3.3=he6710b0_2
+  - libgcc-ng=9.3.0=h5101ec6_17
+  - libgomp=9.3.0=h5101ec6_17
+  - libstdcxx-ng=9.3.0=hd4cf53a_17
+  - libuuid=1.0.3=h7f8727e_2
+  - ncurses=6.3=h7f8727e_2
+  - openssl=1.1.1l=h7f8727e_0
+  - python=3.10.0=h151d27f_3
+  - readline=8.1=h27cfd23_0
+  - sqlite=3.36.0=hc218d9a_0
+  - tk=8.6.11=h1ccaba5_0
+  - tzdata=2021e=hda174b7_0
+  - wheel=0.37.0=pyhd3eb1b0_1
+  - xz=5.2.5=h7b6447c_0
+  - zlib=1.2.11=h7b6447c_3
+  - pip:
+    - click==8.0.3
+    - ghp-import==2.0.2
+    - importlib-metadata==4.8.2
+    - jinja2==3.0.3
+    - markdown==3.3.4
+    - markupsafe==2.0.1
+    - mergedeep==1.3.4
+    - mkdocs==1.2.3
+    - mkdocs-render-swagger-plugin==0.0.3
+    - packaging==21.2
+    - pip==21.2.4
+    - pyparsing==2.4.7
+    - python-dateutil==2.8.2
+    - pyyaml==6.0
+    - pyyaml-env-tag==0.1
+    - setuptools==58.0.4
+    - six==1.16.0
+    - watchdog==2.1.6
+    - zipp==3.6.0