Restructure requirements.txt

Top-level now imports the specific additional requirements for each
python file. Using `pip install -r requirements.txt` will fail if
versions become mismatched in the per-file requirements.

convert-hf-to-gguf_requirements.txt

@@ -1,3 +1,2 @@
--r requirements.txt
 torch==2.1.1
 transformers==4.35.2

convert-lora-to-ggml_requirements.txt

@@ -0,0 +1 @@
+torch==2.1.1

convert_requirements.txt

@@ -0,0 +1,5 @@
+numpy==1.24.4
+sentencepiece==0.1.98
+transformers>=4.34.0
+gguf>=0.1.0
+protobuf>=4.21.0

requirements.txt

@@ -1,6 +1,3 @@
-numpy==1.24.4
+-r convert_requirements.txt
-sentencepiece==0.1.98
+-r convert-hf-to-gguf_requirements.txt
-torch>=2.0.0
+-r convert-lora-to-ggml_requirements.txt
-transformers>=4.34.0
-gguf>=0.1.0
-protobuf>=4.21.0